2639645709504 has 28 divisors (see below), whose sum is σ = 6984062606904. Its totient is φ = 879881903104.

The previous prime is 2639645709397. The next prime is 2639645709539. The reversal of 2639645709504 is 4059075469362.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6874077177 + ... + 6874077560.

Almost surely, 2^{2639645709504} is an apocalyptic number.

2639645709504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2639645709504 is an abundant number, since it is smaller than the sum of its proper divisors (4344416897400).

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

2639645709504 is a wasteful number, since it uses less digits than its factorization.

2639645709504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13748154752 (or 13748154742 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 60.

The spelling of 2639645709504 in words is "two trillion, six hundred thirty-nine billion, six hundred forty-five million, seven hundred nine thousand, five hundred four".