12782473136 has 20 divisors (see below), whose sum is σ = 26069518200. Its totient is φ = 6054855552.

The previous prime is 12782473129. The next prime is 12782473153. The reversal of 12782473136 is 63137428721.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21023501 + ... + 21024108.

It is an arithmetic number, because the mean of its divisors is an integer number (1303475910).

Almost surely, 2^12782473136 is an apocalyptic number.

12782473136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12782473136 is an abundant number, since it is smaller than the sum of its proper divisors (13287045064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12782473136 is a wasteful number, since it uses less digits than its factorization.

12782473136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42047636 (or 42047630 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The spelling of 12782473136 in words is "twelve billion, seven hundred eighty-two million, four hundred seventy-three thousand, one hundred thirty-six".