2634645565213 has 2 divisors, whose sum is σ = 2634645565214. Its totient is φ = 2634645565212.

The previous prime is 2634645565109. The next prime is 2634645565247. The reversal of 2634645565213 is 3125655464362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2624847139044 + 9798426169 = 1620138^2 + 98987^2 .

It is a cyclic number.

It is not a de Polignac number, because 2634645565213 - 2²⁵ = 2634612010781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2634645565913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1317322782606 + 1317322782607.

It is an arithmetic number, because the mean of its divisors is an integer number (1317322782607).

Almost surely, 2^{2634645565213} is an apocalyptic number.

It is an amenable number.

2634645565213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2634645565213 is an equidigital number, since it uses as much as digits as its factorization.

2634645565213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552000, while the sum is 52.

The spelling of 2634645565213 in words is "two trillion, six hundred thirty-four billion, six hundred forty-five million, five hundred sixty-five thousand, two hundred thirteen".