15056109997 has 2 divisors, whose sum is σ = 15056109998. Its totient is φ = 15056109996.

The previous prime is 15056109989. The next prime is 15056110001. The reversal of 15056109997 is 79990165051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10252372516 + 4803737481 = 101254^2 + 69309^2 .

It is a cyclic number.

It is not a de Polignac number, because 15056109997 - 2³ = 15056109989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15056109917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7528054998 + 7528054999.

It is an arithmetic number, because the mean of its divisors is an integer number (7528054999).

Almost surely, 2^15056109997 is an apocalyptic number.

It is an amenable number.

15056109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

15056109997 is an equidigital number, since it uses as much as digits as its factorization.

15056109997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 765450, while the sum is 52.

The spelling of 15056109997 in words is "fifteen billion, fifty-six million, one hundred nine thousand, nine hundred ninety-seven".