61985065024 has 21 divisors (see below), whose sum is σ = 123005565901. Its totient is φ = 30991536640.

The previous prime is 61985065007. The next prime is 61985065123. The reversal of 61985065024 is 42056058916.

The square root of 61985065024 is 248968.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 32894351424 + 29090713600 = 181368^2 + 170560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1976184 + ... + 2007304.

Almost surely, 2^61985065024 is an apocalyptic number.

61985065024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

61985065024 is the 248968-th square number.

It is an amenable number.

61985065024 is a deficient number, since it is larger than the sum of its proper divisors (61020500877).

61985065024 is an frugal number, since it uses more digits than its factorization.

61985065024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62254 (or 31123 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 61985065024 in words is "sixty-one billion, nine hundred eighty-five million, sixty-five thousand, twenty-four".