204423663533931 has 32 divisors (see below), whose sum is σ = 312813036963840. Its totient is φ = 131804469108000.

The previous prime is 204423663533911. The next prime is 204423663533987. The reversal of 204423663533931 is 139335366324402.

204423663533931 is a `hidden beast` number, since 2 + 0 + 4 + 42 + 3 + 6 + 63 + 533 + 9 + 3 + 1 = 666.

It is not a de Polignac number, because 204423663533931 - 2¹⁸ = 204423663271787 is a prime.

It is a super-2 number, since 2×204423663533931² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204423663533911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74357845 + ... + 77058006.

It is an arithmetic number, because the mean of its divisors is an integer number (9775407405120).

Almost surely, 2^{204423663533931} is an apocalyptic number.

204423663533931 is a deficient number, since it is larger than the sum of its proper divisors (108389373429909).

204423663533931 is a wasteful number, since it uses less digits than its factorization.

204423663533931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151417504 (or 151417498 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 54.

The spelling of 204423663533931 in words is "two hundred four trillion, four hundred twenty-three billion, six hundred sixty-three million, five hundred thirty-three thousand, nine hundred thirty-one".