11512257751 has 2 divisors, whose sum is σ = 11512257752. Its totient is φ = 11512257750.

The previous prime is 11512257749. The next prime is 11512257763. The reversal of 11512257751 is 15775221511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11512257751 - 2¹ = 11512257749 is a prime.

Together with 11512257749, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11512257751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11512257151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756128875 + 5756128876.

It is an arithmetic number, because the mean of its divisors is an integer number (5756128876).

Almost surely, 2^11512257751 is an apocalyptic number.

11512257751 is a deficient number, since it is larger than the sum of its proper divisors (1).

11512257751 is an equidigital number, since it uses as much as digits as its factorization.

11512257751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24500, while the sum is 37.

The spelling of 11512257751 in words is "eleven billion, five hundred twelve million, two hundred fifty-seven thousand, seven hundred fifty-one".