155236271904 has 120 divisors (see below), whose sum is σ = 521766419328. Its totient is φ = 44353215360.

The previous prime is 155236271903. The next prime is 155236271909. The reversal of 155236271904 is 409172632551.

155236271904 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 3 + 627 + 19 + 0 + 4 = 666.

It is a super-2 number, since 2×155236271904² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155236271904.

It is not an unprimeable number, because it can be changed into a prime (155236271903) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4259752 + ... + 4296039.

Almost surely, 2^155236271904 is an apocalyptic number.

155236271904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155236271904 is an abundant number, since it is smaller than the sum of its proper divisors (366530147424).

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

155236271904 is an equidigital number, since it uses as much as digits as its factorization.

155236271904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8555820 (or 8555803 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 155236271904 in words is "one hundred fifty-five billion, two hundred thirty-six million, two hundred seventy-one thousand, nine hundred four".