15992713987 has 2 divisors, whose sum is σ = 15992713988. Its totient is φ = 15992713986.

The previous prime is 15992713951. The next prime is 15992714021. The reversal of 15992713987 is 78931729951.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15992713987 is a prime.

It is not a weakly prime, because it can be changed into another prime (15992723987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7996356993 + 7996356994.

It is an arithmetic number, because the mean of its divisors is an integer number (7996356994).

Almost surely, 2^15992713987 is an apocalyptic number.

15992713987 is a deficient number, since it is larger than the sum of its proper divisors (1).

15992713987 is an equidigital number, since it uses as much as digits as its factorization.

15992713987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 61.

The spelling of 15992713987 in words is "fifteen billion, nine hundred ninety-two million, seven hundred thirteen thousand, nine hundred eighty-seven".