65166115616 has 48 divisors (see below), whose sum is σ = 150586583616. Its totient is φ = 27173511936.

The previous prime is 65166115613. The next prime is 65166115711. The reversal of 65166115616 is 61651166156.

It is not an unprimeable number, because it can be changed into a prime (65166115613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3923066 + ... + 3939641.

It is an arithmetic number, because the mean of its divisors is an integer number (3137220492).

Almost surely, 2^65166115616 is an apocalyptic number.

It is an amenable number.

65166115616 is an abundant number, since it is smaller than the sum of its proper divisors (85420468000).

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

65166115616 is a wasteful number, since it uses less digits than its factorization.

65166115616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7862761 (or 7862753 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The spelling of 65166115616 in words is "sixty-five billion, one hundred sixty-six million, one hundred fifteen thousand, six hundred sixteen".