13893214977 has 12 divisors (see below), whose sum is σ = 20073970644. Its totient is φ = 9259377120.

The previous prime is 13893214961. The next prime is 13893214981. The reversal of 13893214977 is 77941239831.

It can be written as a sum of positive squares in 2 ways, for example, as 9936301761 + 3956913216 = 99681^2 + 62904^2 .

It is not a de Polignac number, because 13893214977 - 2⁴ = 13893214961 is a prime.

It is a super-2 number, since 2×13893214977² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13893214927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198474 + ... + 259187.

It is an arithmetic number, because the mean of its divisors is an integer number (1672830887).

Almost surely, 2^13893214977 is an apocalyptic number.

It is an amenable number.

13893214977 is a deficient number, since it is larger than the sum of its proper divisors (6180755667).

13893214977 is a wasteful number, since it uses less digits than its factorization.

13893214977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461040 (or 461037 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The spelling of 13893214977 in words is "thirteen billion, eight hundred ninety-three million, two hundred fourteen thousand, nine hundred seventy-seven".