12876020778 has 32 divisors (see below), whose sum is σ = 25974230400. Its totient is φ = 4255130880.

The previous prime is 12876020723. The next prime is 12876020789. The reversal of 12876020778 is 87702067821.

It is a happy number.

It is a super-2 number, since 2×12876020778² (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 15 ways as a sum of consecutive naturals, for example, 316326 + ... + 354702.

It is an arithmetic number, because the mean of its divisors is an integer number (811694700).

Almost surely, 2^12876020778 is an apocalyptic number.

12876020778 is an abundant number, since it is smaller than the sum of its proper divisors (13098209622).

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

12876020778 is a wasteful number, since it uses less digits than its factorization.

12876020778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38862.

The product of its (nonzero) digits is 526848, while the sum is 48.

The spelling of 12876020778 in words is "twelve billion, eight hundred seventy-six million, twenty thousand, seven hundred seventy-eight".