12457791233578 has 32 divisors (see below), whose sum is σ = 19977825515904. Its totient is φ = 5805662725632.

The previous prime is 12457791233521. The next prime is 12457791233677. The reversal of 12457791233578 is 87533219775421.

It is a happy 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, 9794475 + ... + 10993057.

It is an arithmetic number, because the mean of its divisors is an integer number (624307047372).

Almost surely, 2^{12457791233578} is an apocalyptic number.

12457791233578 is a deficient number, since it is larger than the sum of its proper divisors (7520034282326).

12457791233578 is a wasteful number, since it uses less digits than its factorization.

12457791233578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201566.

The product of its digits is 88905600, while the sum is 64.

The spelling of 12457791233578 in words is "twelve trillion, four hundred fifty-seven billion, seven hundred ninety-one million, two hundred thirty-three thousand, five hundred seventy-eight".