12340423756 has 6 divisors (see below), whose sum is σ = 21595741580. Its totient is φ = 6170211876.

The previous prime is 12340423747. The next prime is 12340423763. The reversal of 12340423756 is 65732404321.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1542552966 + ... + 1542552973.

Almost surely, 2^12340423756 is an apocalyptic number.

It is an amenable number.

12340423756 is a deficient number, since it is larger than the sum of its proper divisors (9255317824).

12340423756 is a wasteful number, since it uses less digits than its factorization.

12340423756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085105943 (or 3085105941 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 12340423756 in words is "twelve billion, three hundred forty million, four hundred twenty-three thousand, seven hundred fifty-six".