61607257660 has 48 divisors (see below), whose sum is σ = 145384900416. Its totient is φ = 21758280192.

The previous prime is 61607257643. The next prime is 61607257727. The reversal of 61607257660 is 6675270616.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 61607257660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5145129 + ... + 5157088.

It is an arithmetic number, because the mean of its divisors is an integer number (3028852092).

Almost surely, 2^61607257660 is an apocalyptic number.

It is an amenable number.

61607257660 is an abundant number, since it is smaller than the sum of its proper divisors (83777642756).

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

61607257660 is a wasteful number, since it uses less digits than its factorization.

61607257660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10302262 (or 10302260 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 61607257660 in words is "sixty-one billion, six hundred seven million, two hundred fifty-seven thousand, six hundred sixty".