15040270997 has 2 divisors, whose sum is σ = 15040270998. Its totient is φ = 15040270996.

The previous prime is 15040270981. The next prime is 15040271003. The reversal of 15040270997 is 79907204051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14867900356 + 172370641 = 121934^2 + 13129^2 .

It is a cyclic number.

It is not a de Polignac number, because 15040270997 - 2⁴ = 15040270981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15040270907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7520135498 + 7520135499.

It is an arithmetic number, because the mean of its divisors is an integer number (7520135499).

Almost surely, 2^15040270997 is an apocalyptic number.

It is an amenable number.

15040270997 is a deficient number, since it is larger than the sum of its proper divisors (1).

15040270997 is an equidigital number, since it uses as much as digits as its factorization.

15040270997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 15040270997 in words is "fifteen billion, forty million, two hundred seventy thousand, nine hundred ninety-seven".