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144977218930 = 2541794475987
BaseRepresentation
bin1000011100000101010…
…0001100110101110010
3111212012201012210120001
42013001110030311302
54333403132001210
6150333540540214
713321446012445
oct2070124146562
9455181183501
10144977218930
1156536951415
12241206b166a
1310895aa565b
14703467d65c
153b87b7803a
hex21c150cd72

144977218930 has 32 divisors (see below), whose sum is σ = 270707754240. Its totient is φ = 55860305280.

The previous prime is 144977218907. The next prime is 144977218937. The reversal of 144977218930 is 39812779441.

It is not an unprimeable number, because it can be changed into a prime (144977218937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2205604 + ... + 2270383.

It is an arithmetic number, because the mean of its divisors is an integer number (8459617320).

Almost surely, 2144977218930 is an apocalyptic number.

144977218930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144977218930 is a deficient number, since it is larger than the sum of its proper divisors (125730535310).

144977218930 is a wasteful number, since it uses less digits than its factorization.

144977218930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476114.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 144977218930 in words is "one hundred forty-four billion, nine hundred seventy-seven million, two hundred eighteen thousand, nine hundred thirty".

Divisors: 1 2 5 10 41 79 82 158 205 395 410 790 3239 6478 16195 32390 4475987 8951974 22379935 44759870 183515467 353602973 367030934 707205946 917577335 1768014865 1835154670 3536029730 14497721893 28995443786 72488609465 144977218930