201557233904 has 20 divisors (see below), whose sum is σ = 420556921176. Its totient is φ = 93026415552.

The previous prime is 201557233853. The next prime is 201557233921. The reversal of 201557233904 is 409332755102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484512374 + ... + 484512789.

Almost surely, 2^201557233904 is an apocalyptic number.

It is an amenable number.

201557233904 is an abundant number, since it is smaller than the sum of its proper divisors (218999687272).

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

201557233904 is a wasteful number, since it uses less digits than its factorization.

201557233904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969025184 (or 969025178 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 201557233904 in words is "two hundred one billion, five hundred fifty-seven million, two hundred thirty-three thousand, nine hundred four".