15956065951 has 12 divisors (see below), whose sum is σ = 18744917400. Its totient is φ = 13541211600.

The previous prime is 15956065949. The next prime is 15956065967.

15956065951 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 15956065951 - 2¹ = 15956065949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15956065991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1607101 + ... + 1616998.

It is an arithmetic number, because the mean of its divisors is an integer number (1562076450).

Almost surely, 2^15956065951 is an apocalyptic number.

15956065951 is a deficient number, since it is larger than the sum of its proper divisors (2788851449).

15956065951 is a wasteful number, since it uses less digits than its factorization.

15956065951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3224214 (or 3224207 counting only the distinct ones).

The product of its (nonzero) digits is 1822500, while the sum is 52.

The spelling of 15956065951 in words is "fifteen billion, nine hundred fifty-six million, sixty-five thousand, nine hundred fifty-one".