515111655660 has 48 divisors (see below), whose sum is σ = 1648357299456. Its totient is φ = 117739806912.

The previous prime is 515111655581. The next prime is 515111655671. The reversal of 515111655660 is 66556111515.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 613227742 + ... + 613228581.

It is an arithmetic number, because the mean of its divisors is an integer number (34340777072).

Almost surely, 2^515111655660 is an apocalyptic number.

It is an amenable number.

515111655660 is an abundant number, since it is smaller than the sum of its proper divisors (1133245643796).

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

515111655660 is a wasteful number, since it uses less digits than its factorization.

515111655660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226456342 (or 1226456340 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 515111655660 in words is "five hundred fifteen billion, one hundred eleven million, six hundred fifty-five thousand, six hundred sixty".