12749908651 has 4 divisors (see below), whose sum is σ = 12866880400. Its totient is φ = 12632936904.

The previous prime is 12749908607. The next prime is 12749908669. The reversal of 12749908651 is 15680994721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15680994721 = 7 ⋅2240142103.

It is a cyclic number.

It is not a de Polignac number, because 12749908651 - 2⁹ = 12749908139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12749908601) 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, 58485711 + ... + 58485928.

It is an arithmetic number, because the mean of its divisors is an integer number (3216720100).

Almost surely, 2^12749908651 is an apocalyptic number.

12749908651 is a deficient number, since it is larger than the sum of its proper divisors (116971749).

12749908651 is a wasteful number, since it uses less digits than its factorization.

12749908651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116971748.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 12749908651 in words is "twelve billion, seven hundred forty-nine million, nine hundred eight thousand, six hundred fifty-one".