615977968160 has 48 divisors (see below), whose sum is σ = 1455540370200. Its totient is φ = 246341677056.

The previous prime is 615977968157. The next prime is 615977968163. The reversal of 615977968160 is 61869779516.

It is an interprime number because it is at equal distance from previous prime (615977968157) and next prime (615977968163).

It can be written as a sum of positive squares in 4 ways, for example, as 582907818256 + 33070149904 = 763484^2 + 181852^2 .

It is not an unprimeable number, because it can be changed into a prime (615977968163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417146 + ... + 1185734.

Almost surely, 2^615977968160 is an apocalyptic number.

It is an amenable number.

615977968160 is an abundant number, since it is smaller than the sum of its proper divisors (839562402040).

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

615977968160 is a wasteful number, since it uses less digits than its factorization.

615977968160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773613 (or 773605 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 65.

The spelling of 615977968160 in words is "six hundred fifteen billion, nine hundred seventy-seven million, nine hundred sixty-eight thousand, one hundred sixty".