155939754925812 has 432 divisors, whose sum is σ = 441018006912000. Its totient is φ = 42825813338880.

The previous prime is 155939754925769. The next prime is 155939754925841. The reversal of 155939754925812 is 218529457939551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3470009239 + ... + 3470054177.

It is an arithmetic number, because the mean of its divisors is an integer number (1020875016000).

Almost surely, 2^{155939754925812} is an apocalyptic number.

155939754925812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155939754925812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220509003456000).

155939754925812 is an abundant number, since it is smaller than the sum of its proper divisors (285078251986188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155939754925812 is a wasteful number, since it uses less digits than its factorization.

155939754925812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45252 (or 45226 counting only the distinct ones).

The product of its digits is 1224720000, while the sum is 75.

The spelling of 155939754925812 in words is "one hundred fifty-five trillion, nine hundred thirty-nine billion, seven hundred fifty-four million, nine hundred twenty-five thousand, eight hundred twelve".