13662404657 has 16 divisors (see below), whose sum is σ = 15033703680. Its totient is φ = 12313078800.

The previous prime is 13662404563. The next prime is 13662404669. The reversal of 13662404657 is 75640426631.

It is not a de Polignac number, because 13662404657 - 2¹² = 13662400561 is a prime.

It is a super-2 number, since 2×13662404657² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13662404677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641258 + ... + 662220.

It is an arithmetic number, because the mean of its divisors is an integer number (939606480).

Almost surely, 2^13662404657 is an apocalyptic number.

It is an amenable number.

13662404657 is a deficient number, since it is larger than the sum of its proper divisors (1371299023).

13662404657 is a wasteful number, since it uses less digits than its factorization.

13662404657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21484.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 13662404657 in words is "thirteen billion, six hundred sixty-two million, four hundred four thousand, six hundred fifty-seven".