6515611655660 has 12 divisors (see below), whose sum is σ = 13682784476928. Its totient is φ = 2606244662256.

The previous prime is 6515611655633. The next prime is 6515611655689. The reversal of 6515611655660 is 665561165156.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162890291372 + ... + 162890291411.

It is an arithmetic number, because the mean of its divisors is an integer number (1140232039744).

Almost surely, 2^{6515611655660} is an apocalyptic number.

It is an amenable number.

6515611655660 is an abundant number, since it is smaller than the sum of its proper divisors (7167172821268).

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

6515611655660 is a wasteful number, since it uses less digits than its factorization.

6515611655660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325780582792 (or 325780582790 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 6515611655660 in words is "six trillion, five hundred fifteen billion, six hundred eleven million, six hundred fifty-five thousand, six hundred sixty".