12257335647 has 6 divisors (see below), whose sum is σ = 17705040392. Its totient is φ = 8171557092.

The previous prime is 12257335639. The next prime is 12257335667. The reversal of 12257335647 is 74653375221.

12257335647 is a `hidden beast` number, since 1 + 2 + 2 + 57 + 33 + 564 + 7 = 666.

It is not a de Polignac number, because 12257335647 - 2³ = 12257335639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12257335627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 680963083 + ... + 680963100.

Almost surely, 2^12257335647 is an apocalyptic number.

12257335647 is a deficient number, since it is larger than the sum of its proper divisors (5447704745).

12257335647 is a wasteful number, since it uses less digits than its factorization.

12257335647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361926189 (or 1361926186 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The spelling of 12257335647 in words is "twelve billion, two hundred fifty-seven million, three hundred thirty-five thousand, six hundred forty-seven".