12439599449636 has 12 divisors (see below), whose sum is σ = 21807557914380. Its totient is φ = 6208868616960.

The previous prime is 12439599449617. The next prime is 12439599449657. The reversal of 12439599449636 is 63694499593421.

It can be written as a sum of positive squares in 2 ways, for example, as 1387698136036 + 11051901313600 = 1178006^2 + 3324440^2 .

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, 2732774405 + ... + 2732778956.

It is an arithmetic number, because the mean of its divisors is an integer number (1817296492865).

Almost surely, 2^{12439599449636} is an apocalyptic number.

It is an amenable number.

12439599449636 is a deficient number, since it is larger than the sum of its proper divisors (9367958464744).

12439599449636 is a wasteful number, since it uses less digits than its factorization.

12439599449636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5465553934 (or 5465553932 counting only the distinct ones).

The product of its digits is 1360488960, while the sum is 74.

The spelling of 12439599449636 in words is "twelve trillion, four hundred thirty-nine billion, five hundred ninety-nine million, four hundred forty-nine thousand, six hundred thirty-six".