12749454648 has 96 divisors (see below), whose sum is σ = 41197251600. Its totient is φ = 3642698304.

The previous prime is 12749454647. The next prime is 12749454649. The reversal of 12749454648 is 84645494721.

12749454648 is a `hidden beast` number, since 1 + 2 + 7 + 4 + 94 + 546 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (12749454647) and next prime (12749454649).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 12749454594 and 12749454603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749454647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 591715 + ... + 612882.

Almost surely, 2^12749454648 is an apocalyptic number.

12749454648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12749454648 is an abundant number, since it is smaller than the sum of its proper divisors (28447796952).

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

12749454648 is a wasteful number, since it uses less digits than its factorization.

12749454648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204626 (or 1204609 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 12749454648 in words is "twelve billion, seven hundred forty-nine million, four hundred fifty-four thousand, six hundred forty-eight".