15217874951 has 16 divisors (see below), whose sum is σ = 16085304000. Its totient is φ = 14368155648.

The previous prime is 15217874941. The next prime is 15217874999. The reversal of 15217874951 is 15947871251.

It is a cyclic number.

It is not a de Polignac number, because 15217874951 - 2²⁶ = 15150766087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15217874951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15217874941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1256975 + ... + 1269023.

It is an arithmetic number, because the mean of its divisors is an integer number (1005331500).

Almost surely, 2^15217874951 is an apocalyptic number.

15217874951 is a deficient number, since it is larger than the sum of its proper divisors (867429049).

15217874951 is a wasteful number, since it uses less digits than its factorization.

15217874951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778.

The product of its digits is 705600, while the sum is 50.

The spelling of 15217874951 in words is "fifteen billion, two hundred seventeen million, eight hundred seventy-four thousand, nine hundred fifty-one".