12709798776 has 40 divisors (see below), whose sum is σ = 35599206720. Its totient is φ = 4236599376.

The previous prime is 12709798771. The next prime is 12709798819. The reversal of 12709798776 is 67789790721.

It is a super-2 number, since 2×12709798776² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12709798771) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9806296 + ... + 9807591.

It is an arithmetic number, because the mean of its divisors is an integer number (889980168).

Almost surely, 2^12709798776 is an apocalyptic number.

It is an amenable number.

12709798776 is an abundant number, since it is smaller than the sum of its proper divisors (22889407944).

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

12709798776 is a wasteful number, since it uses less digits than its factorization.

12709798776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19613905 (or 19613892 counting only the distinct ones).

The product of its (nonzero) digits is 18670176, while the sum is 63.

The spelling of 12709798776 in words is "twelve billion, seven hundred nine million, seven hundred ninety-eight thousand, seven hundred seventy-six".