2640515344564 has 12 divisors (see below), whose sum is σ = 4621176517888. Its totient is φ = 1320179196600.

The previous prime is 2640515344549. The next prime is 2640515344639. The reversal of 2640515344564 is 4654435150462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19543182 + ... + 19677829.

Almost surely, 2^{2640515344564} is an apocalyptic number.

It is an amenable number.

2640515344564 is a deficient number, since it is larger than the sum of its proper divisors (1980661173324).

2640515344564 is a wasteful number, since it uses less digits than its factorization.

2640515344564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39237846 (or 39237844 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 2640515344564 in words is "two trillion, six hundred forty billion, five hundred fifteen million, three hundred forty-four thousand, five hundred sixty-four".