66410577672 has 32 divisors (see below), whose sum is σ = 167670276480. Its totient is φ = 21917681600.

The previous prime is 66410577587. The next prime is 66410577733. The reversal of 66410577672 is 27677501466.

It is a happy number.

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, 13696128 + ... + 13700975.

It is an arithmetic number, because the mean of its divisors is an integer number (5239696140).

Almost surely, 2^66410577672 is an apocalyptic number.

It is an amenable number.

66410577672 is an abundant number, since it is smaller than the sum of its proper divisors (101259698808).

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

66410577672 is a wasteful number, since it uses less digits than its factorization.

66410577672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27397213 (or 27397209 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 51.

The spelling of 66410577672 in words is "sixty-six billion, four hundred ten million, five hundred seventy-seven thousand, six hundred seventy-two".