61232123565504 has 70 divisors (see below), whose sum is σ = 181511196549144. Its totient is φ = 20410707853440.

The previous prime is 61232123565497. The next prime is 61232123565523. The reversal of 61232123565504 is 40556532123216.

61232123565504 is a `hidden beast` number, since 6 + 1 + 2 + 3 + 21 + 23 + 56 + 550 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 61232123565504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5905870932 + ... + 5905881299.

Almost surely, 2^{61232123565504} is an apocalyptic number.

61232123565504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61232123565504 is an abundant number, since it is smaller than the sum of its proper divisors (120279072983640).

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

61232123565504 is a wasteful number, since it uses less digits than its factorization.

61232123565504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11811752255 (or 11811752236 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 61232123565504 in words is "sixty-one trillion, two hundred thirty-two billion, one hundred twenty-three million, five hundred sixty-five thousand, five hundred four".