512451070640 has 40 divisors (see below), whose sum is σ = 1207769968608. Its totient is φ = 202172474880.

The previous prime is 512451070631. The next prime is 512451070667. The reversal of 512451070640 is 46070154215.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 512451070640.

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, 43868396 + ... + 43880075.

Almost surely, 2^512451070640 is an apocalyptic number.

It is an amenable number.

512451070640 is an abundant number, since it is smaller than the sum of its proper divisors (695318897968).

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

512451070640 is a wasteful number, since it uses less digits than its factorization.

512451070640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87748557 (or 87748551 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 512451070640 in words is "five hundred twelve billion, four hundred fifty-one million, seventy thousand, six hundred forty".