12792821731 has 2 divisors, whose sum is σ = 12792821732. Its totient is φ = 12792821730.

The previous prime is 12792821687. The next prime is 12792821773. The reversal of 12792821731 is 13712829721.

It is a strong prime.

It is an emirp because it is prime and its reverse (13712829721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12792821731 - 2⁷ = 12792821603 is a prime.

It is a super-2 number, since 2×12792821731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12792821791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6396410865 + 6396410866.

It is an arithmetic number, because the mean of its divisors is an integer number (6396410866).

Almost surely, 2^12792821731 is an apocalyptic number.

12792821731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12792821731 is an equidigital number, since it uses as much as digits as its factorization.

12792821731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The spelling of 12792821731 in words is "twelve billion, seven hundred ninety-two million, eight hundred twenty-one thousand, seven hundred thirty-one".