12026776616 has 72 divisors (see below), whose sum is σ = 24756949710. Its totient is φ = 5476078080.

The previous prime is 12026776607. The next prime is 12026776631. The reversal of 12026776616 is 61667762021.

It can be written as a sum of positive squares in 3 ways, for example, as 11306068900 + 720707716 = 106330^2 + 26846^2 .

It is a super-2 number, since 2×12026776616² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2219126 + ... + 2224538.

Almost surely, 2^12026776616 is an apocalyptic number.

It is an amenable number.

12026776616 is an abundant number, since it is smaller than the sum of its proper divisors (12730173094).

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

12026776616 is a wasteful number, since it uses less digits than its factorization.

12026776616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5515 (or 5463 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 12026776616 in words is "twelve billion, twenty-six million, seven hundred seventy-six thousand, six hundred sixteen".