15170940137 has 2 divisors, whose sum is σ = 15170940138. Its totient is φ = 15170940136.

The previous prime is 15170940121. The next prime is 15170940173. The reversal of 15170940137 is 73104907151.

Together with next prime (15170940173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9570513241 + 5600426896 = 97829^2 + 74836^2 .

It is a cyclic number.

It is not a de Polignac number, because 15170940137 - 2⁴ = 15170940121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15170940137.

It is not a weakly prime, because it can be changed into another prime (15170900137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7585470068 + 7585470069.

It is an arithmetic number, because the mean of its divisors is an integer number (7585470069).

Almost surely, 2^15170940137 is an apocalyptic number.

It is an amenable number.

15170940137 is a deficient number, since it is larger than the sum of its proper divisors (1).

15170940137 is an equidigital number, since it uses as much as digits as its factorization.

15170940137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 38.

The spelling of 15170940137 in words is "fifteen billion, one hundred seventy million, nine hundred forty thousand, one hundred thirty-seven".