12499737616 has 40 divisors (see below), whose sum is σ = 24636128544. Its totient is φ = 6142456320.

The previous prime is 12499737587. The next prime is 12499737643. The reversal of 12499737616 is 61673799421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461736 + ... + 488056.

Almost surely, 2^12499737616 is an apocalyptic number.

12499737616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12499737616 is a deficient number, since it is larger than the sum of its proper divisors (12136390928).

12499737616 is a wasteful number, since it uses less digits than its factorization.

12499737616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26839 (or 26833 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The spelling of 12499737616 in words is "twelve billion, four hundred ninety-nine million, seven hundred thirty-seven thousand, six hundred sixteen".