13996476237897 has 90 divisors (see below), whose sum is σ = 22700575135854. Its totient is φ = 8564420805120.

The previous prime is 13996476237889. The next prime is 13996476237901. The reversal of 13996476237897 is 79873267469931.

It is a happy number.

13996476237897 is a `hidden beast` number, since 1 + 3 + 9 + 96 + 4 + 76 + 2 + 378 + 97 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7836498576 + 13988639739321 = 88524^2 + 3740139^2 .

It is not a de Polignac number, because 13996476237897 - 2³ = 13996476237889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (13996476237847) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 5691937054 + ... + 5691939512.

Almost surely, 2^{13996476237897} is an apocalyptic number.

13996476237897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13996476237897 is a deficient number, since it is larger than the sum of its proper divisors (8704098897957).

13996476237897 is an frugal number, since it uses more digits than its factorization.

13996476237897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029 (or 2520 counting only the distinct ones).

The product of its digits is 5184974592, while the sum is 81.

The spelling of 13996476237897 in words is "thirteen trillion, nine hundred ninety-six billion, four hundred seventy-six million, two hundred thirty-seven thousand, eight hundred ninety-seven".