12657759498 has 24 divisors (see below), whose sum is σ = 27429725700. Its totient is φ = 4218548544.

The previous prime is 12657759493. The next prime is 12657759539. The reversal of 12657759498 is 89495775621.

12657759498 is a `hidden beast` number, since 1 + 2 + 6 + 577 + 59 + 4 + 9 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10829940489 + 1827819009 = 104067^2 + 42753^2 .

It is not an unprimeable number, because it can be changed into a prime (12657759493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58368 + ... + 169476.

Almost surely, 2^12657759498 is an apocalyptic number.

12657759498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12657759498 is an abundant number, since it is smaller than the sum of its proper divisors (14771966202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12657759498 is a wasteful number, since it uses less digits than its factorization.

12657759498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117446 (or 117443 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 63.

The spelling of 12657759498 in words is "twelve billion, six hundred fifty-seven million, seven hundred fifty-nine thousand, four hundred ninety-eight".