2639520770013 has 14 divisors (see below), whose sum is σ = 3957470785214. Its totient is φ = 1759680512856.

The previous prime is 2639520770011. The next prime is 2639520770027. The reversal of 2639520770013 is 3100770259362.

2639520770013 is a `hidden beast` number, since 2 + 639 + 5 + 2 + 0 + 7 + 7 + 0 + 0 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2603533921209 + 35986848804 = 1613547^2 + 189702^2 .

It is not a de Polignac number, because 2639520770013 - 2¹ = 2639520770011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639520770011) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1810370170 + ... + 1810371627.

Almost surely, 2^{2639520770013} is an apocalyptic number.

It is an amenable number.

2639520770013 is a deficient number, since it is larger than the sum of its proper divisors (1317950015201).

2639520770013 is an frugal number, since it uses more digits than its factorization.

2639520770013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620741815 (or 3620741800 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 45.

The spelling of 2639520770013 in words is "two trillion, six hundred thirty-nine billion, five hundred twenty million, seven hundred seventy thousand, thirteen".