12455775777 has 8 divisors (see below), whose sum is σ = 16608435264. Its totient is φ = 8303483408.

The previous prime is 12455775751. The next prime is 12455775779. The reversal of 12455775777 is 77757755421.

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 12455775777 - 2¹² = 12455771681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12455775779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703 + ... + 157835.

It is an arithmetic number, because the mean of its divisors is an integer number (2076054408).

Almost surely, 2^12455775777 is an apocalyptic number.

It is an amenable number.

12455775777 is a deficient number, since it is larger than the sum of its proper divisors (4152659487).

12455775777 is a wasteful number, since it uses less digits than its factorization.

12455775777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183559.

The product of its digits is 16807000, while the sum is 57.

The spelling of 12455775777 in words is "twelve billion, four hundred fifty-five million, seven hundred seventy-five thousand, seven hundred seventy-seven".