61513552600 has 48 divisors (see below), whose sum is σ = 150546335400. Its totient is φ = 23310397440.

The previous prime is 61513552549. The next prime is 61513552663. The reversal of 61513552600 is 625531516.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 8090089 + ... + 8097688.

Almost surely, 2^61513552600 is an apocalyptic number.

It is an amenable number.

61513552600 is an abundant number, since it is smaller than the sum of its proper divisors (89032782800).

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

61513552600 is a wasteful number, since it uses less digits than its factorization.

61513552600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16187812 (or 16187803 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 61513552600 in words is "sixty-one billion, five hundred thirteen million, five hundred fifty-two thousand, six hundred".