15715869413 has 2 divisors, whose sum is σ = 15715869414. Its totient is φ = 15715869412.

The previous prime is 15715869391. The next prime is 15715869431. The reversal of 15715869413 is 31496851751.

Together with next prime (15715869431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15099985924 + 615883489 = 122882^2 + 24817^2 .

It is a cyclic number.

It is not a de Polignac number, because 15715869413 - 2⁶ = 15715869349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15715862413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7857934706 + 7857934707.

It is an arithmetic number, because the mean of its divisors is an integer number (7857934707).

Almost surely, 2^15715869413 is an apocalyptic number.

It is an amenable number.

15715869413 is a deficient number, since it is larger than the sum of its proper divisors (1).

15715869413 is an equidigital number, since it uses as much as digits as its factorization.

15715869413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 50.

The spelling of 15715869413 in words is "fifteen billion, seven hundred fifteen million, eight hundred sixty-nine thousand, four hundred thirteen".