12457913444 has 12 divisors (see below), whose sum is σ = 21821302524. Its totient is φ = 6223255584.

The previous prime is 12457913443. The next prime is 12457913491. The reversal of 12457913444 is 44431975421.

It can be written as a sum of positive squares in 2 ways, for example, as 12172708900 + 285204544 = 110330^2 + 16888^2 .

It is a super-2 number, since 2×12457913444² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12457913395 and 12457913404.

It is not an unprimeable number, because it can be changed into a prime (12457913443) 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, 1420367 + ... + 1429110.

It is an arithmetic number, because the mean of its divisors is an integer number (1818441877).

Almost surely, 2^12457913444 is an apocalyptic number.

It is an amenable number.

12457913444 is a deficient number, since it is larger than the sum of its proper divisors (9363389080).

12457913444 is a wasteful number, since it uses less digits than its factorization.

12457913444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850574 (or 2850572 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The spelling of 12457913444 in words is "twelve billion, four hundred fifty-seven million, nine hundred thirteen thousand, four hundred forty-four".