12940422579 has 36 divisors (see below), whose sum is σ = 21447373584. Its totient is φ = 7365079872.

The previous prime is 12940422577. The next prime is 12940422581. The reversal of 12940422579 is 97522404921.

12940422579 is a `hidden beast` number, since 12 + 9 + 40 + 4 + 22 + 579 = 666.

It is an interprime number because it is at equal distance from previous prime (12940422577) and next prime (12940422581).

It is not a de Polignac number, because 12940422579 - 2¹ = 12940422577 is a prime.

It is a super-2 number, since 2×12940422579² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12940422577) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4832589 + ... + 4835265.

Almost surely, 2^12940422579 is an apocalyptic number.

12940422579 is a deficient number, since it is larger than the sum of its proper divisors (8506951005).

12940422579 is an equidigital number, since it uses as much as digits as its factorization.

12940422579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244 (or 2964 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 12940422579 in words is "twelve billion, nine hundred forty million, four hundred twenty-two thousand, five hundred seventy-nine".