15772115113 has 2 divisors, whose sum is σ = 15772115114. Its totient is φ = 15772115112.

The previous prime is 15772115077. The next prime is 15772115123. The reversal of 15772115113 is 31151127751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14661092889 + 1111022224 = 121083^2 + 33332^2 .

It is a cyclic number.

It is not a de Polignac number, because 15772115113 - 2⁹ = 15772114601 is a prime.

It is not a weakly prime, because it can be changed into another prime (15772115123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7886057556 + 7886057557.

It is an arithmetic number, because the mean of its divisors is an integer number (7886057557).

Almost surely, 2^15772115113 is an apocalyptic number.

It is an amenable number.

15772115113 is a deficient number, since it is larger than the sum of its proper divisors (1).

15772115113 is an equidigital number, since it uses as much as digits as its factorization.

15772115113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7350, while the sum is 34.

The spelling of 15772115113 in words is "fifteen billion, seven hundred seventy-two million, one hundred fifteen thousand, one hundred thirteen".