2511522398813 has 2 divisors, whose sum is σ = 2511522398814. Its totient is φ = 2511522398812.

The previous prime is 2511522398807. The next prime is 2511522398831. The reversal of 2511522398813 is 3188932251152.

Together with next prime (2511522398831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1425762566809 + 1085759832004 = 1194053^2 + 1041998^2 .

It is a cyclic number.

It is not a de Polignac number, because 2511522398813 - 2²² = 2511518204509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2511522398863) by changing a digit.

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 as a sum of consecutive naturals, namely, 1255761199406 + 1255761199407.

It is an arithmetic number, because the mean of its divisors is an integer number (1255761199407).

Almost surely, 2^{2511522398813} is an apocalyptic number.

It is an amenable number.

2511522398813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2511522398813 is an equidigital number, since it uses as much as digits as its factorization.

2511522398813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 50.

The spelling of 2511522398813 in words is "two trillion, five hundred eleven billion, five hundred twenty-two million, three hundred ninety-eight thousand, eight hundred thirteen".