12918492776 has 32 divisors (see below), whose sum is σ = 27748289280. Its totient is φ = 5523336000.

The previous prime is 12918492733. The next prime is 12918492781. The reversal of 12918492776 is 67729481921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 250400 + ... + 297551.

It is an arithmetic number, because the mean of its divisors is an integer number (867134040).

Almost surely, 2^12918492776 is an apocalyptic number.

It is an amenable number.

12918492776 is an abundant number, since it is smaller than the sum of its proper divisors (14829796504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12918492776 is a wasteful number, since it uses less digits than its factorization.

12918492776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548385 (or 548381 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 56.

The spelling of 12918492776 in words is "twelve billion, nine hundred eighteen million, four hundred ninety-two thousand, seven hundred seventy-six".