65611616015516 has 12 divisors (see below), whose sum is σ = 118524209576640. Its totient is φ = 31747556136480.

The previous prime is 65611616015509. The next prime is 65611616015557. The reversal of 65611616015516 is 61551061611656.

It is a congruent number.

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, 264562967681 + ... + 264562967928.

It is an arithmetic number, because the mean of its divisors is an integer number (9877017464720).

Almost surely, 2^{65611616015516} is an apocalyptic number.

It is an amenable number.

65611616015516 is a deficient number, since it is larger than the sum of its proper divisors (52912593561124).

65611616015516 is a wasteful number, since it uses less digits than its factorization.

65611616015516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529125935644 (or 529125935642 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 65611616015516 in words is "sixty-five trillion, six hundred eleven billion, six hundred sixteen million, fifteen thousand, five hundred sixteen".