12764420874721 has 4 divisors (see below), whose sum is σ = 12764631212032. Its totient is φ = 12764210537412.

The previous prime is 12764420874707. The next prime is 12764420874727. The reversal of 12764420874721 is 12747802446721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12764420874721 - 2³⁷ = 12626981921249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12764420874727) 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, 105077601 + ... + 105199006.

It is an arithmetic number, because the mean of its divisors is an integer number (3191157803008).

Almost surely, 2^{12764420874721} is an apocalyptic number.

It is an amenable number.

12764420874721 is a deficient number, since it is larger than the sum of its proper divisors (210337311).

12764420874721 is an equidigital number, since it uses as much as digits as its factorization.

12764420874721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210337310.

The product of its (nonzero) digits is 8429568, while the sum is 55.

The spelling of 12764420874721 in words is "twelve trillion, seven hundred sixty-four billion, four hundred twenty million, eight hundred seventy-four thousand, seven hundred twenty-one".