615130645064 has 32 divisors (see below), whose sum is σ = 1315154889720. Its totient is φ = 267206071296.

The previous prime is 615130645061. The next prime is 615130645079. The reversal of 615130645064 is 460546031516.

It can be written as a sum of positive squares in 4 ways, for example, as 497716140100 + 117414504964 = 705490^2 + 342658^2 .

It is not an unprimeable number, because it can be changed into a prime (615130645061) 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, 173960519 + ... + 173964054.

Almost surely, 2^615130645064 is an apocalyptic number.

It is an amenable number.

615130645064 is an abundant number, since it is smaller than the sum of its proper divisors (700024244656).

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

615130645064 is a wasteful number, since it uses less digits than its factorization.

615130645064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347924609 (or 347924605 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 615130645064 in words is "six hundred fifteen billion, one hundred thirty million, six hundred forty-five thousand, sixty-four".