15651591713 has 2 divisors, whose sum is σ = 15651591714. Its totient is φ = 15651591712.

The previous prime is 15651591673. The next prime is 15651591743. The reversal of 15651591713 is 31719515651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8272266304 + 7379325409 = 90952^2 + 85903^2 .

It is a cyclic number.

It is not a de Polignac number, because 15651591713 - 2⁶ = 15651591649 is a prime.

It is not a weakly prime, because it can be changed into another prime (15651591743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7825795856 + 7825795857.

It is an arithmetic number, because the mean of its divisors is an integer number (7825795857).

Almost surely, 2^15651591713 is an apocalyptic number.

It is an amenable number.

15651591713 is a deficient number, since it is larger than the sum of its proper divisors (1).

15651591713 is an equidigital number, since it uses as much as digits as its factorization.

15651591713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141750, while the sum is 44.

The spelling of 15651591713 in words is "fifteen billion, six hundred fifty-one million, five hundred ninety-one thousand, seven hundred thirteen".