15995659951 has 2 divisors, whose sum is σ = 15995659952. Its totient is φ = 15995659950.

The previous prime is 15995659877. The next prime is 15995659957.

15995659951 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 15995659951 - 2¹⁵ = 15995627183 is a prime.

It is a super-2 number, since 2×15995659951² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15995659957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7997829975 + 7997829976.

It is an arithmetic number, because the mean of its divisors is an integer number (7997829976).

Almost surely, 2^15995659951 is an apocalyptic number.

15995659951 is a deficient number, since it is larger than the sum of its proper divisors (1).

15995659951 is an equidigital number, since it uses as much as digits as its factorization.

15995659951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24603750, while the sum is 64.

The spelling of 15995659951 in words is "fifteen billion, nine hundred ninety-five million, six hundred fifty-nine thousand, nine hundred fifty-one".