13106776418 has 6 divisors (see below), whose sum is σ = 19660407489. Its totient is φ = 6553307256.

The previous prime is 13106776357. The next prime is 13106776421. The reversal of 13106776418 is 81467760131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11896919329 + 1209857089 = 109073^2 + 34783^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=80953.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 121430 + ... + 202382.

Almost surely, 2^13106776418 is an apocalyptic number.

13106776418 is a deficient number, since it is larger than the sum of its proper divisors (6553631071).

13106776418 is an frugal number, since it uses more digits than its factorization.

13106776418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161908 (or 80955 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 13106776418 in words is "thirteen billion, one hundred six million, seven hundred seventy-six thousand, four hundred eighteen".