61315970440360 has 64 divisors (see below), whose sum is σ = 141694319304720. Its totient is φ = 23862719232000.

The previous prime is 61315970440303. The next prime is 61315970440393. The reversal of 61315970440360 is 6304407951316.

It can be written as a sum of positive squares in 8 ways, for example, as 38077612538436 + 23238357901924 = 6170706^2 + 4820618^2 .

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, 44846860 + ... + 46193860.

Almost surely, 2^{61315970440360} is an apocalyptic number.

It is an amenable number.

61315970440360 is an abundant number, since it is smaller than the sum of its proper divisors (80378348864360).

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

61315970440360 is a wasteful number, since it uses less digits than its factorization.

61315970440360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377806 (or 1377802 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 61315970440360 in words is "sixty-one trillion, three hundred fifteen billion, nine hundred seventy million, four hundred forty thousand, three hundred sixty".