245615556616 has 16 divisors (see below), whose sum is σ = 460693861740. Its totient is φ = 122763860160.

The previous prime is 245615556581. The next prime is 245615556617. The reversal of 245615556616 is 616655516542.

It can be written as a sum of positive squares in 2 ways, for example, as 206074234116 + 39541322500 = 453954^2 + 198850^2 .

It is not an unprimeable number, because it can be changed into a prime (245615556617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5465995 + ... + 5510746.

Almost surely, 2^245615556616 is an apocalyptic number.

It is an amenable number.

245615556616 is a deficient number, since it is larger than the sum of its proper divisors (215078305124).

245615556616 is a wasteful number, since it uses less digits than its factorization.

245615556616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10979544 (or 10979540 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 52.

The spelling of 245615556616 in words is "two hundred forty-five billion, six hundred fifteen million, five hundred fifty-six thousand, six hundred sixteen".