61656552600 has 48 divisors (see below), whose sum is σ = 191135314920. Its totient is φ = 16441747200.

The previous prime is 61656552539. The next prime is 61656552613. The reversal of 61656552600 is 625565616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51379861 + ... + 51381060.

Almost surely, 2^61656552600 is an apocalyptic number.

61656552600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61656552600 is an abundant number, since it is smaller than the sum of its proper divisors (129478762320).

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

61656552600 is a wasteful number, since it uses less digits than its factorization.

61656552600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102760940 (or 102760931 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 61656552600 in words is "sixty-one billion, six hundred fifty-six million, five hundred fifty-two thousand, six hundred".