12172783294 has 16 divisors (see below), whose sum is σ = 21102098400. Its totient is φ = 5158289664.

The previous prime is 12172783277. The next prime is 12172783303. The reversal of 12172783294 is 49238727121.

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, 4883499 + ... + 4885990.

It is an arithmetic number, because the mean of its divisors is an integer number (1318881150).

Almost surely, 2^12172783294 is an apocalyptic number.

12172783294 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12172783294 is a deficient number, since it is larger than the sum of its proper divisors (8929315106).

12172783294 is an equidigital number, since it uses as much as digits as its factorization.

12172783294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769587.

The product of its digits is 338688, while the sum is 46.

The spelling of 12172783294 in words is "twelve billion, one hundred seventy-two million, seven hundred eighty-three thousand, two hundred ninety-four".