155503157004 has 72 divisors (see below), whose sum is σ = 423364529952. Its totient is φ = 47841431040.

The previous prime is 155503156981. The next prime is 155503157039. The reversal of 155503157004 is 400751305551.

It is a happy number.

155503157004 is a `hidden beast` number, since 1 + 5 + 5 + 50 + 31 + 570 + 0 + 4 = 666.

155503157004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 155503157004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5655169 + ... + 5682599.

It is an arithmetic number, because the mean of its divisors is an integer number (5880062916).

Almost surely, 2^155503157004 is an apocalyptic number.

It is an amenable number.

155503157004 is an abundant number, since it is smaller than the sum of its proper divisors (267861372948).

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

155503157004 is a wasteful number, since it uses less digits than its factorization.

155503157004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39567 (or 39562 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The spelling of 155503157004 in words is "one hundred fifty-five billion, five hundred three million, one hundred fifty-seven thousand, four".