13812977169 has 8 divisors (see below), whose sum is σ = 20463669920. Its totient is φ = 9208651428.

The previous prime is 13812977147. The next prime is 13812977197. The reversal of 13812977169 is 96177921831.

It is a happy number.

It is not a de Polignac number, because 13812977169 - 2⁷ = 13812977041 is a prime.

It is a super-2 number, since 2×13812977169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13812907169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255795847 + ... + 255795900.

It is an arithmetic number, because the mean of its divisors is an integer number (2557958740).

Almost surely, 2^13812977169 is an apocalyptic number.

It is an amenable number.

13812977169 is a deficient number, since it is larger than the sum of its proper divisors (6650692751).

13812977169 is an equidigital number, since it uses as much as digits as its factorization.

13812977169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511591756 (or 511591750 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The spelling of 13812977169 in words is "thirteen billion, eight hundred twelve million, nine hundred seventy-seven thousand, one hundred sixty-nine".