12651933747 has 4 divisors (see below), whose sum is σ = 16869245000. Its totient is φ = 8434622496.

The previous prime is 12651933737. The next prime is 12651933761. The reversal of 12651933747 is 74733915621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74733915621 = 3 ⋅24911305207.

It is not a de Polignac number, because 12651933747 - 2⁸ = 12651933491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12651933696 and 12651933705.

It is not an unprimeable number, because it can be changed into a prime (12651933737) 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, 2108655622 + ... + 2108655627.

It is an arithmetic number, because the mean of its divisors is an integer number (4217311250).

Almost surely, 2^12651933747 is an apocalyptic number.

12651933747 is a deficient number, since it is larger than the sum of its proper divisors (4217311253).

12651933747 is an equidigital number, since it uses as much as digits as its factorization.

12651933747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217311252.

The product of its digits is 952560, while the sum is 48.

The spelling of 12651933747 in words is "twelve billion, six hundred fifty-one million, nine hundred thirty-three thousand, seven hundred forty-seven".