12147938456 has 16 divisors (see below), whose sum is σ = 22794067440. Its totient is φ = 6069520480.

The previous prime is 12147938447. The next prime is 12147938461. The reversal of 12147938456 is 65483974121.

It is a happy number.

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, 544475 + ... + 566346.

It is an arithmetic number, because the mean of its divisors is an integer number (1424629215).

Almost surely, 2^12147938456 is an apocalyptic number.

It is an amenable number.

12147938456 is a deficient number, since it is larger than the sum of its proper divisors (10646128984).

12147938456 is a wasteful number, since it uses less digits than its factorization.

12147938456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112194 (or 1112190 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The spelling of 12147938456 in words is "twelve billion, one hundred forty-seven million, nine hundred thirty-eight thousand, four hundred fifty-six".