664455141744 has 40 divisors (see below), whose sum is σ = 1718625750912. Its totient is φ = 221211933120.

The previous prime is 664455141737. The next prime is 664455141781. The reversal of 664455141744 is 447141554466.

664455141744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 8495484 + ... + 8573339.

Almost surely, 2^664455141744 is an apocalyptic number.

It is an amenable number.

664455141744 is an abundant number, since it is smaller than the sum of its proper divisors (1054170609168).

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

664455141744 is a wasteful number, since it uses less digits than its factorization.

664455141744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17069645 (or 17069639 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 51.

The spelling of 664455141744 in words is "six hundred sixty-four billion, four hundred fifty-five million, one hundred forty-one thousand, seven hundred forty-four".