15511797113 has 2 divisors, whose sum is σ = 15511797114. Its totient is φ = 15511797112.

The previous prime is 15511797109. The next prime is 15511797121. The reversal of 15511797113 is 31179711551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15453473344 + 58323769 = 124312^2 + 7637^2 .

It is a cyclic number.

It is not a de Polignac number, because 15511797113 - 2² = 15511797109 is a prime.

It is not a weakly prime, because it can be changed into another prime (15511797193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7755898556 + 7755898557.

It is an arithmetic number, because the mean of its divisors is an integer number (7755898557).

Almost surely, 2^15511797113 is an apocalyptic number.

It is an amenable number.

15511797113 is a deficient number, since it is larger than the sum of its proper divisors (1).

15511797113 is an equidigital number, since it uses as much as digits as its factorization.

15511797113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33075, while the sum is 41.

The spelling of 15511797113 in words is "fifteen billion, five hundred eleven million, seven hundred ninety-seven thousand, one hundred thirteen".