12457320716 has 12 divisors (see below), whose sum is σ = 22076265120. Its totient is φ = 6149816400.

The previous prime is 12457320713. The next prime is 12457320727. The reversal of 12457320716 is 61702375421.

It is a self number, because there is not a number n which added to its sum of digits gives 12457320716.

It is not an unprimeable number, because it can be changed into a prime (12457320713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19710635 + ... + 19711266.

It is an arithmetic number, because the mean of its divisors is an integer number (1839688760).

Almost surely, 2^12457320716 is an apocalyptic number.

It is an amenable number.

12457320716 is a deficient number, since it is larger than the sum of its proper divisors (9618944404).

12457320716 is a wasteful number, since it uses less digits than its factorization.

12457320716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39421984 (or 39421982 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 12457320716 in words is "twelve billion, four hundred fifty-seven million, three hundred twenty thousand, seven hundred sixteen".