12403507657 has 8 divisors (see below), whose sum is σ = 12783990240. Its totient is φ = 12026737440.

The previous prime is 12403507631. The next prime is 12403507663. The reversal of 12403507657 is 75670530421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12403507657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12403507687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921307 + ... + 934672.

It is an arithmetic number, because the mean of its divisors is an integer number (1597998780).

Almost surely, 2^12403507657 is an apocalyptic number.

It is an amenable number.

12403507657 is a deficient number, since it is larger than the sum of its proper divisors (380482583).

12403507657 is a wasteful number, since it uses less digits than its factorization.

12403507657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856183.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 12403507657 in words is "twelve billion, four hundred three million, five hundred seven thousand, six hundred fifty-seven".