12449742388 has 48 divisors (see below), whose sum is σ = 22596636160. Its totient is φ = 5997131136.

The previous prime is 12449742359. The next prime is 12449742401. The reversal of 12449742388 is 88324794421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12486706 + ... + 12487702.

Almost surely, 2^12449742388 is an apocalyptic number.

It is an amenable number.

12449742388 is a deficient number, since it is larger than the sum of its proper divisors (10146893772).

12449742388 is a wasteful number, since it uses less digits than its factorization.

12449742388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1782 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 52.

The spelling of 12449742388 in words is "twelve billion, four hundred forty-nine million, seven hundred forty-two thousand, three hundred eighty-eight".