155207042656 has 48 divisors (see below), whose sum is σ = 310581843264. Its totient is φ = 76334828544.

The previous prime is 155207042597. The next prime is 155207042659. The reversal of 155207042656 is 656240702551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155207042659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782265 + ... + 960391.

It is an arithmetic number, because the mean of its divisors is an integer number (6470455068).

Almost surely, 2^155207042656 is an apocalyptic number.

155207042656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155207042656 is an abundant number, since it is smaller than the sum of its proper divisors (155374800608).

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

155207042656 is a wasteful number, since it uses less digits than its factorization.

155207042656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178583 (or 178575 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 155207042656 in words is "one hundred fifty-five billion, two hundred seven million, forty-two thousand, six hundred fifty-six".