66415022860 has 12 divisors (see below), whose sum is σ = 139471548048. Its totient is φ = 26566009136.

The previous prime is 66415022857. The next prime is 66415022881. The reversal of 66415022860 is 6822051466.

It is a super-2 number, since 2×66415022860² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1660375552 + ... + 1660375591.

It is an arithmetic number, because the mean of its divisors is an integer number (11622629004).

Almost surely, 2^66415022860 is an apocalyptic number.

It is an amenable number.

66415022860 is an abundant number, since it is smaller than the sum of its proper divisors (73056525188).

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

66415022860 is a wasteful number, since it uses less digits than its factorization.

66415022860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320751152 (or 3320751150 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 66415022860 in words is "sixty-six billion, four hundred fifteen million, twenty-two thousand, eight hundred sixty".