2640002512764 has 24 divisors (see below), whose sum is σ = 6160033127808. Its totient is φ = 879996942640.

The previous prime is 2640002512757. The next prime is 2640002512799. The reversal of 2640002512764 is 4672152000462.

It is a super-2 number, since 2×2640002512764² (a number of 26 digits) contains 22 as substring.

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, 3967219 + ... + 4584629.

It is an arithmetic number, because the mean of its divisors is an integer number (256668046992).

Almost surely, 2^{2640002512764} is an apocalyptic number.

It is an amenable number.

2640002512764 is an abundant number, since it is smaller than the sum of its proper divisors (3520030615044).

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

2640002512764 is a wasteful number, since it uses less digits than its factorization.

2640002512764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973745 (or 973743 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 2640002512764 in words is "two trillion, six hundred forty billion, two million, five hundred twelve thousand, seven hundred sixty-four".