15256081667 has 2 divisors, whose sum is σ = 15256081668. Its totient is φ = 15256081666.

The previous prime is 15256081661. The next prime is 15256081693. The reversal of 15256081667 is 76618065251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15256081667 - 2¹⁶ = 15256016131 is a prime.

It is not a weakly prime, because it can be changed into another prime (15256081661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7628040833 + 7628040834.

It is an arithmetic number, because the mean of its divisors is an integer number (7628040834).

Almost surely, 2^15256081667 is an apocalyptic number.

15256081667 is a deficient number, since it is larger than the sum of its proper divisors (1).

15256081667 is an equidigital number, since it uses as much as digits as its factorization.

15256081667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 15256081667 in words is "fifteen billion, two hundred fifty-six million, eighty-one thousand, six hundred sixty-seven".