13646973497 has 16 divisors (see below), whose sum is σ = 15104241600. Its totient is φ = 12278226240.

The previous prime is 13646973463. The next prime is 13646973517. The reversal of 13646973497 is 79437964631.

It is a happy number.

13646973497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13646973497 - 2²² = 13642779193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13646973427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169403 + ... + 236624.

It is an arithmetic number, because the mean of its divisors is an integer number (944015100).

Almost surely, 2^13646973497 is an apocalyptic number.

It is an amenable number.

13646973497 is a deficient number, since it is larger than the sum of its proper divisors (1457268103).

13646973497 is a wasteful number, since it uses less digits than its factorization.

13646973497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406136.

The product of its digits is 20575296, while the sum is 59.

The spelling of 13646973497 in words is "thirteen billion, six hundred forty-six million, nine hundred seventy-three thousand, four hundred ninety-seven".