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144849023979 = 3111943972571
BaseRepresentation
bin1000011011100110101…
…1001011001111101011
3111211212202222211010220
42012321223023033223
54333122322231404
6150313121141123
713315331250312
oct2067153131753
9454782884126
10144849023979
1156480552680
12240a578a7a3
131087536c65a
14702162d279
153b7b7a44d9
hex21b9acb3eb

144849023979 has 96 divisors (see below), whose sum is σ = 229701288960. Its totient is φ = 80254540800.

The previous prime is 144849023959. The next prime is 144849023983. The reversal of 144849023979 is 979320948441.

It is not a de Polignac number, because 144849023979 - 212 = 144849019883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144849023959) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 253675764 + ... + 253676334.

It is an arithmetic number, because the mean of its divisors is an integer number (2392721760).

Almost surely, 2144849023979 is an apocalyptic number.

144849023979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

144849023979 is a deficient number, since it is larger than the sum of its proper divisors (84852264981).

144849023979 is a wasteful number, since it uses less digits than its factorization.

144849023979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 144849023979 in words is "one hundred forty-four billion, eight hundred forty-nine million, twenty-three thousand, nine hundred seventy-nine".

Divisors: 1 3 11 19 33 43 57 97 129 209 291 473 571 627 817 1067 1419 1713 1843 2451 3201 4171 5529 6281 8987 9409 10849 12513 18843 20273 24553 26961 28227 32547 45881 55387 60819 73659 79249 103499 119339 137643 166161 178771 237747 270083 310497 358017 404587 466507 536313 609257 810249 871739 1052353 1213761 1399521 1827771 1966481 2381641 2615217 3157059 4450457 5131577 5372539 5899443 7144923 7687153 11575883 13351371 15394731 16117617 23061459 26198051 34727649 45251179 59097929 78594153 84558683 102078241 135753537 177293787 231019177 253676049 306234723 497762969 693057531 1122860651 1493288907 2541210947 3368581953 4389364363 7623632841 13168093089 48283007993 144849023979