12504518951 has 4 divisors (see below), whose sum is σ = 13048193712. Its totient is φ = 11960844192.

The previous prime is 12504518921. The next prime is 12504518969. The reversal of 12504518951 is 15981540521.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-12504518951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12504518899 and 12504518908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12504518921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271837346 + ... + 271837391.

It is an arithmetic number, because the mean of its divisors is an integer number (3262048428).

Almost surely, 2^12504518951 is an apocalyptic number.

12504518951 is a deficient number, since it is larger than the sum of its proper divisors (543674761).

12504518951 is an equidigital number, since it uses as much as digits as its factorization.

12504518951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543674760.

The product of its (nonzero) digits is 72000, while the sum is 41.

The spelling of 12504518951 in words is "twelve billion, five hundred four million, five hundred eighteen thousand, nine hundred fifty-one".