61456073764 has 12 divisors (see below), whose sum is σ = 107553620188. Its totient is φ = 30726468000.

The previous prime is 61456073747. The next prime is 61456073803. The reversal of 61456073764 is 46737065416.

It can be written as a sum of positive squares in 2 ways, for example, as 26033822500 + 35422251264 = 161350^2 + 188208^2 .

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, 301767 + ... + 462574.

Almost surely, 2^61456073764 is an apocalyptic number.

It is an amenable number.

61456073764 is a deficient number, since it is larger than the sum of its proper divisors (46097546424).

61456073764 is a wasteful number, since it uses less digits than its factorization.

61456073764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784446 (or 784444 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 61456073764 in words is "sixty-one billion, four hundred fifty-six million, seventy-three thousand, seven hundred sixty-four".