12777180761 has 16 divisors (see below), whose sum is σ = 13043213568. Its totient is φ = 12514444800.

The previous prime is 12777180727. The next prime is 12777180763. The reversal of 12777180761 is 16708177721.

It is a cyclic number.

It is not a de Polignac number, because 12777180761 - 2³⁰ = 11703438937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12777180763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5475551 + ... + 5477883.

It is an arithmetic number, because the mean of its divisors is an integer number (815200848).

Almost surely, 2^12777180761 is an apocalyptic number.

It is an amenable number.

12777180761 is a deficient number, since it is larger than the sum of its proper divisors (266032807).

12777180761 is a wasteful number, since it uses less digits than its factorization.

12777180761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992.

The product of its (nonzero) digits is 230496, while the sum is 47.

The spelling of 12777180761 in words is "twelve billion, seven hundred seventy-seven million, one hundred eighty thousand, seven hundred sixty-one".