66300140507660 has 24 divisors (see below), whose sum is σ = 140531512781520. Its totient is φ = 26272205209664.

The previous prime is 66300140507603. The next prime is 66300140507759. The reversal of 66300140507660 is 6670504100366.

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, 15490684895 + ... + 15490689174.

It is an arithmetic number, because the mean of its divisors is an integer number (5855479699230).

Almost surely, 2^{66300140507660} is an apocalyptic number.

It is an amenable number.

66300140507660 is an abundant number, since it is smaller than the sum of its proper divisors (74231372273860).

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

66300140507660 is a wasteful number, since it uses less digits than its factorization.

66300140507660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30981374185 (or 30981374183 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 66300140507660 in words is "sixty-six trillion, three hundred billion, one hundred forty million, five hundred seven thousand, six hundred sixty".