12457529579 has 4 divisors (see below), whose sum is σ = 13590032280. Its totient is φ = 11325026880.

The previous prime is 12457529551. The next prime is 12457529597. The reversal of 12457529579 is 97592575421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12457529579 - 2⁸ = 12457529323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12457522579) 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, 566251334 + ... + 566251355.

It is an arithmetic number, because the mean of its divisors is an integer number (3397508070).

Almost surely, 2^12457529579 is an apocalyptic number.

12457529579 is a deficient number, since it is larger than the sum of its proper divisors (1132502701).

12457529579 is a wasteful number, since it uses less digits than its factorization.

12457529579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132502700.

The product of its digits is 7938000, while the sum is 56.

The spelling of 12457529579 in words is "twelve billion, four hundred fifty-seven million, five hundred twenty-nine thousand, five hundred seventy-nine".