12457601648 has 10 divisors (see below), whose sum is σ = 24136603224. Its totient is φ = 6228800816.

The previous prime is 12457601633. The next prime is 12457601677. The reversal of 12457601648 is 84610675421.

It is a junction number, because it is equal to n+sod(n) for n = 12457601599 and 12457601608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389300036 + ... + 389300067.

Almost surely, 2^12457601648 is an apocalyptic number.

It is an amenable number.

12457601648 is a deficient number, since it is larger than the sum of its proper divisors (11679001576).

12457601648 is an equidigital number, since it uses as much as digits as its factorization.

12457601648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778600111 (or 778600105 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 12457601648 in words is "twelve billion, four hundred fifty-seven million, six hundred one thousand, six hundred forty-eight".