61623057992 has 16 divisors (see below), whose sum is σ = 116123856000. Its totient is φ = 30656696400.

The previous prime is 61623057919. The next prime is 61623058001. The reversal of 61623057992 is 29975032616.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 61623057992.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19352384 + ... + 19355567.

It is an arithmetic number, because the mean of its divisors is an integer number (7257741000).

Almost surely, 2^61623057992 is an apocalyptic number.

It is an amenable number.

61623057992 is a deficient number, since it is larger than the sum of its proper divisors (54500798008).

61623057992 is a wasteful number, since it uses less digits than its factorization.

61623057992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38708156 (or 38708152 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 61623057992 in words is "sixty-one billion, six hundred twenty-three million, fifty-seven thousand, nine hundred ninety-two".