12777576155 has 8 divisors (see below), whose sum is σ = 15484904784. Its totient is φ = 10120852000.

The previous prime is 12777576143. The next prime is 12777576173. The reversal of 12777576155 is 55167577721.

It is a happy number.

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

It is not a de Polignac number, because 12777576155 - 2⁴ = 12777576139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12777576097 and 12777576106.

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, 12650561 + ... + 12651570.

It is an arithmetic number, because the mean of its divisors is an integer number (1935613098).

Almost surely, 2^12777576155 is an apocalyptic number.

12777576155 is a deficient number, since it is larger than the sum of its proper divisors (2707328629).

12777576155 is a wasteful number, since it uses less digits than its factorization.

12777576155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25302237.

The product of its digits is 3601500, while the sum is 53.

The spelling of 12777576155 in words is "twelve billion, seven hundred seventy-seven million, five hundred seventy-six thousand, one hundred fifty-five".