61914865960 has 24 divisors (see below), whose sum is σ = 139311989370. Its totient is φ = 24765316896.

The previous prime is 61914865919. The next prime is 61914865973. The reversal of 61914865960 is 6956841916.

It can be written as a sum of positive squares in only one way, i.e., 55723379364 + 6191486596 = 236058^2 + 78686^2 .

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1554049 + ... + 1593391.

Almost surely, 2^61914865960 is an apocalyptic number.

It is an amenable number.

61914865960 is an abundant number, since it is smaller than the sum of its proper divisors (77397123410).

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

61914865960 is an frugal number, since it uses more digits than its factorization.

61914865960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78697 (or 39350 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 61914865960 in words is "sixty-one billion, nine hundred fourteen million, eight hundred sixty-five thousand, nine hundred sixty".