61516500505165 has 16 divisors (see below), whose sum is σ = 75071365286400. Its totient is φ = 48378832431552.

The previous prime is 61516500505153. The next prime is 61516500505171. The reversal of 61516500505165 is 56150500561516.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61516500505165 - 2²⁵ = 61516466950733 is a prime.

It is a congruent number.

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, 76583359 + ... + 77382451.

It is an arithmetic number, because the mean of its divisors is an integer number (4691960330400).

Almost surely, 2^{61516500505165} is an apocalyptic number.

It is an amenable number.

61516500505165 is a deficient number, since it is larger than the sum of its proper divisors (13554864781235).

61516500505165 is a wasteful number, since it uses less digits than its factorization.

61516500505165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060116.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 61516500505165 in words is "sixty-one trillion, five hundred sixteen billion, five hundred million, five hundred five thousand, one hundred sixty-five".