12777767855 has 8 divisors (see below), whose sum is σ = 15337552272. Its totient is φ = 10219393728.

The previous prime is 12777767803. The next prime is 12777767867. The reversal of 12777767855 is 55876777721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12777767855 - 2²⁰ = 12776719279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332534 + ... + 368963.

It is an arithmetic number, because the mean of its divisors is an integer number (1917194034).

Almost surely, 2^12777767855 is an apocalyptic number.

12777767855 is a deficient number, since it is larger than the sum of its proper divisors (2559784417).

12777767855 is an equidigital number, since it uses as much as digits as its factorization.

12777767855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705145.

The product of its digits is 40336800, while the sum is 62.

The spelling of 12777767855 in words is "twelve billion, seven hundred seventy-seven million, seven hundred sixty-seven thousand, eight hundred fifty-five".