66570660204 has 24 divisors (see below), whose sum is σ = 155998206000.
Its totient is φ = 22094982144.
The previous prime is 66570660193. The next prime is 66570660263. The reversal of 66570660204 is 40206607566.
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, 11901829 + ... + 11907420.
It is an arithmetic number, because the mean of its divisors is an integer number (6499925250).
Almost surely, 266570660204 is an apocalyptic number.
It is an amenable number.
66570660204 is an abundant number, since it is smaller than the sum of its proper divisors (89427545796).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
66570660204 is a wasteful number, since it uses less digits than its factorization.
66570660204 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23809489 (or 23809487 counting only the distinct ones).
The product of its (nonzero) digits is 362880, while the sum is 42.
The spelling of 66570660204 in words is "sixty-six billion, five hundred seventy million, six hundred sixty thousand, two hundred four".