65166615516 has 24 divisors (see below), whose sum is σ = 152191595920. Its totient is φ = 21702753792.

The previous prime is 65166615487. The next prime is 65166615529. The reversal of 65166615516 is 61551666156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2417461 + ... + 2444268.

Almost surely, 2^65166615516 is an apocalyptic number.

It is an amenable number.

65166615516 is an abundant number, since it is smaller than the sum of its proper divisors (87024980404).

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

65166615516 is a wasteful number, since it uses less digits than its factorization.

65166615516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4862853 (or 4862851 counting only the distinct ones).

The product of its digits is 972000, while the sum is 48.

The spelling of 65166615516 in words is "sixty-five billion, one hundred sixty-six million, six hundred fifteen thousand, five hundred sixteen".