12439498556 has 12 divisors (see below), whose sum is σ = 21770098392. Its totient is φ = 6219470448.

The previous prime is 12439498543. The next prime is 12439498567. The reversal of 12439498556 is 65589493421.

It is a super-2 number, since 2×12439498556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55766 + ... + 167298.

It is an arithmetic number, because the mean of its divisors is an integer number (1814174866).

Almost surely, 2^12439498556 is an apocalyptic number.

It is a pronic number, being equal to 111532×111533.

It is an amenable number.

12439498556 is a deficient number, since it is larger than the sum of its proper divisors (9330599836).

12439498556 is a wasteful number, since it uses less digits than its factorization.

12439498556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139420 (or 139418 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 56.

The spelling of 12439498556 in words is "twelve billion, four hundred thirty-nine million, four hundred ninety-eight thousand, five hundred fifty-six".