12823970172 has 48 divisors (see below), whose sum is σ = 33335531040. Its totient is φ = 3809772288.

The previous prime is 12823970149. The next prime is 12823970177. The reversal of 12823970172 is 27107932821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12823970177) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1412803 + ... + 1421850.

It is an arithmetic number, because the mean of its divisors is an integer number (694490230).

Almost surely, 2^12823970172 is an apocalyptic number.

12823970172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12823970172 is an abundant number, since it is smaller than the sum of its proper divisors (20511560868).

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

12823970172 is a wasteful number, since it uses less digits than its factorization.

12823970172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834702 (or 2834700 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 12823970172 in words is "twelve billion, eight hundred twenty-three million, nine hundred seventy thousand, one hundred seventy-two".