12791136077 has 2 divisors, whose sum is σ = 12791136078. Its totient is φ = 12791136076.

The previous prime is 12791136047. The next prime is 12791136101. The reversal of 12791136077 is 77063119721.

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., 7441822756 + 5349313321 = 86266^2 + 73139^2 .

It is a cyclic number.

It is not a de Polignac number, because 12791136077 - 2¹² = 12791131981 is a prime.

It is a super-2 number, since 2×12791136077² (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 (12791136047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6395568038 + 6395568039.

It is an arithmetic number, because the mean of its divisors is an integer number (6395568039).

Almost surely, 2^12791136077 is an apocalyptic number.

It is an amenable number.

12791136077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12791136077 is an equidigital number, since it uses as much as digits as its factorization.

12791136077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 44.

The spelling of 12791136077 in words is "twelve billion, seven hundred ninety-one million, one hundred thirty-six thousand, seventy-seven".