12782317432 has 32 divisors (see below), whose sum is σ = 24499522800. Its totient is φ = 6250235904.

The previous prime is 12782317421. The next prime is 12782317487. The reversal of 12782317432 is 23471328721.

It is a super-2 number, since 2×12782317432² (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 7 ways as a sum of consecutive naturals, for example, 20938 + ... + 161254.

Almost surely, 2^12782317432 is an apocalyptic number.

It is an amenable number.

12782317432 is a deficient number, since it is larger than the sum of its proper divisors (11717205368).

12782317432 is a wasteful number, since it uses less digits than its factorization.

12782317432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140575 (or 140571 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The spelling of 12782317432 in words is "twelve billion, seven hundred eighty-two million, three hundred seventeen thousand, four hundred thirty-two".