13377776168 has 16 divisors (see below), whose sum is σ = 25096836660. Its totient is φ = 6685286400.

The previous prime is 13377776161. The next prime is 13377776197. The reversal of 13377776168 is 86167777331.

It can be written as a sum of positive squares in 2 ways, for example, as 13083241924 + 294534244 = 114382^2 + 17162^2 .

It is a super-2 number, since 2×13377776168² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13377776161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434393 + ... + 464168.

Almost surely, 2^13377776168 is an apocalyptic number.

It is an amenable number.

13377776168 is a deficient number, since it is larger than the sum of its proper divisors (11719060492).

13377776168 is a wasteful number, since it uses less digits than its factorization.

13377776168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900428 (or 900424 counting only the distinct ones).

The product of its digits is 6223392, while the sum is 56.

The spelling of 13377776168 in words is "thirteen billion, three hundred seventy-seven million, seven hundred seventy-six thousand, one hundred sixty-eight".