664477146641140 has 48 divisors (see below), whose sum is σ = 1595155218854400. Its totient is φ = 227762155003392.

The previous prime is 664477146641101. The next prime is 664477146641153. The reversal of 664477146641140 is 41146641774466.

It is a congruent number.

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, 609672220 + ... + 610761139.

It is an arithmetic number, because the mean of its divisors is an integer number (33232400392800).

Almost surely, 2^{664477146641140} is an apocalyptic number.

It is an amenable number.

664477146641140 is an abundant number, since it is smaller than the sum of its proper divisors (930678072213260).

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

664477146641140 is a wasteful number, since it uses less digits than its factorization.

664477146641140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220437264 (or 1220437262 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 61.

The spelling of 664477146641140 in words is "six hundred sixty-four trillion, four hundred seventy-seven billion, one hundred forty-six million, six hundred forty-one thousand, one hundred forty".