13646009257 has 16 divisors (see below), whose sum is σ = 14494311424. Its totient is φ = 12824568000.

The previous prime is 13646009243. The next prime is 13646009263. The reversal of 13646009257 is 75290064631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13646009257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13646009297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 609532 + ... + 631522.

It is an arithmetic number, because the mean of its divisors is an integer number (905894464).

Almost surely, 2^13646009257 is an apocalyptic number.

It is an amenable number.

13646009257 is a deficient number, since it is larger than the sum of its proper divisors (848302167).

13646009257 is a wasteful number, since it uses less digits than its factorization.

13646009257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22600.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 13646009257 in words is "thirteen billion, six hundred forty-six million, nine thousand, two hundred fifty-seven".