155020392956 has 48 divisors (see below), whose sum is σ = 320331322080. Its totient is φ = 64713304320.

The previous prime is 155020392929. The next prime is 155020392979. The reversal of 155020392956 is 659293020551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 155020392956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575171 + ... + 800538.

It is an arithmetic number, because the mean of its divisors is an integer number (6673569210).

Almost surely, 2^155020392956 is an apocalyptic number.

It is an amenable number.

155020392956 is an abundant number, since it is smaller than the sum of its proper divisors (165310929124).

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

155020392956 is a wasteful number, since it uses less digits than its factorization.

155020392956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375934 (or 1375932 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 47.

The spelling of 155020392956 in words is "one hundred fifty-five billion, twenty million, three hundred ninety-two thousand, nine hundred fifty-six".