66677676012 has 48 divisors (see below), whose sum is σ = 183036762720. Its totient is φ = 20918486016.

The previous prime is 66677676001. The next prime is 66677676053. The reversal of 66677676012 is 21067677666.

It is a super-2 number, since 2×66677676012² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 66677676012.

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, 18156573 + ... + 18160244.

It is an arithmetic number, because the mean of its divisors is an integer number (3813265890).

Almost surely, 2^66677676012 is an apocalyptic number.

It is an amenable number.

66677676012 is an abundant number, since it is smaller than the sum of its proper divisors (116359086708).

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

66677676012 is a wasteful number, since it uses less digits than its factorization.

66677676012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36316847 (or 36316839 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 66677676012 in words is "sixty-six billion, six hundred seventy-seven million, six hundred seventy-six thousand, twelve".