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144821483387 = 720688783341
BaseRepresentation
bin1000011011100000001…
…0000111011101111011
3111211210212011121112222
42012320002013131323
54333043244432022
6150310254554255
713314545204120
oct2067002073573
9454725147488
10144821483387
1156466a51a59
122409850898b
131086c748c49
14701bb00747
153b79164242
hex21b808777b

144821483387 has 4 divisors (see below), whose sum is σ = 165510266736. Its totient is φ = 124132700040.

The previous prime is 144821483383. The next prime is 144821483393. The reversal of 144821483387 is 783384128441.

It is a happy number.

144821483387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783384128441 = 4165118808291.

It is a cyclic number.

It is not a de Polignac number, because 144821483387 - 22 = 144821483383 is a prime.

It is a super-2 number, since 2×1448214833872 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144821483383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10344391664 + ... + 10344391677.

It is an arithmetic number, because the mean of its divisors is an integer number (41377566684).

Almost surely, 2144821483387 is an apocalyptic number.

144821483387 is a deficient number, since it is larger than the sum of its proper divisors (20688783349).

144821483387 is an equidigital number, since it uses as much as digits as its factorization.

144821483387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20688783348.

The product of its digits is 4128768, while the sum is 53.

The spelling of 144821483387 in words is "one hundred forty-four billion, eight hundred twenty-one million, four hundred eighty-three thousand, three hundred eighty-seven".

Divisors: 1 7 20688783341 144821483387