12791099933 has 2 divisors, whose sum is σ = 12791099934. Its totient is φ = 12791099932.

The previous prime is 12791099887. The next prime is 12791099957. The reversal of 12791099933 is 33999019721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11659248484 + 1131851449 = 107978^2 + 33643^2 .

It is a cyclic number.

It is not a de Polignac number, because 12791099933 - 2⁸ = 12791099677 is a prime.

It is a super-2 number, since 2×12791099933² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12791099983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6395549966 + 6395549967.

It is an arithmetic number, because the mean of its divisors is an integer number (6395549967).

Almost surely, 2^12791099933 is an apocalyptic number.

It is an amenable number.

12791099933 is a deficient number, since it is larger than the sum of its proper divisors (1).

12791099933 is an equidigital number, since it uses as much as digits as its factorization.

12791099933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 826686, while the sum is 53.

The spelling of 12791099933 in words is "twelve billion, seven hundred ninety-one million, ninety-nine thousand, nine hundred thirty-three".