155255374580 has 12 divisors (see below), whose sum is σ = 326036286660. Its totient is φ = 62102149824.

The previous prime is 155255374543. The next prime is 155255374591. The reversal of 155255374580 is 85473552551.

It can be written as a sum of positive squares in 2 ways, for example, as 93809888656 + 61445485924 = 306284^2 + 247882^2 .

It is a super-2 number, since 2×155255374580² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3881384345 + ... + 3881384384.

It is an arithmetic number, because the mean of its divisors is an integer number (27169690555).

Almost surely, 2^155255374580 is an apocalyptic number.

155255374580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155255374580 is an abundant number, since it is smaller than the sum of its proper divisors (170780912080).

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

155255374580 is a wasteful number, since it uses less digits than its factorization.

155255374580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762768738 (or 7762768736 counting only the distinct ones).

The product of its (nonzero) digits is 4200000, while the sum is 50.

The spelling of 155255374580 in words is "one hundred fifty-five billion, two hundred fifty-five million, three hundred seventy-four thousand, five hundred eighty".