66116151516 has 24 divisors (see below), whose sum is σ = 157553383680. Its totient is φ = 21569808112.

The previous prime is 66116151503. The next prime is 66116151559. The reversal of 66116151516 is 61515161166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58613046 + ... + 58614173.

It is an arithmetic number, because the mean of its divisors is an integer number (6564724320).

Almost surely, 2^66116151516 is an apocalyptic number.

It is an amenable number.

66116151516 is an abundant number, since it is smaller than the sum of its proper divisors (91437232164).

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

66116151516 is a wasteful number, since it uses less digits than its factorization.

66116151516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117227273 (or 117227271 counting only the distinct ones).

The product of its digits is 32400, while the sum is 39.

The spelling of 66116151516 in words is "sixty-six billion, one hundred sixteen million, one hundred fifty-one thousand, five hundred sixteen".