12455775776 has 12 divisors (see below), whose sum is σ = 24522308622. Its totient is φ = 6227887872.

The previous prime is 12455775751. The next prime is 12455775779. The reversal of 12455775776 is 67757755421.

It can be written as a sum of positive squares in only one way, i.e., 12083285776 + 372490000 = 109924^2 + 19300^2 .

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 as a sum of consecutive naturals, namely, 194621465 + ... + 194621528.

Almost surely, 2^12455775776 is an apocalyptic number.

12455775776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12455775776 is a deficient number, since it is larger than the sum of its proper divisors (12066532846).

12455775776 is an equidigital number, since it uses as much as digits as its factorization.

12455775776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389243003 (or 389242995 counting only the distinct ones).

The product of its digits is 14406000, while the sum is 56.

The spelling of 12455775776 in words is "twelve billion, four hundred fifty-five million, seven hundred seventy-five thousand, seven hundred seventy-six".