12673171780 has 24 divisors (see below), whose sum is σ = 26668329408. Its totient is φ = 5058855648.

The previous prime is 12673171757. The next prime is 12673171799. The reversal of 12673171780 is 8717137621.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 640834 + ... + 660313.

It is an arithmetic number, because the mean of its divisors is an integer number (1111180392).

Almost surely, 2^12673171780 is an apocalyptic number.

12673171780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12673171780 is an abundant number, since it is smaller than the sum of its proper divisors (13995157628).

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

12673171780 is a wasteful number, since it uses less digits than its factorization.

12673171780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301643 (or 1301641 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 43.

The spelling of 12673171780 in words is "twelve billion, six hundred seventy-three million, one hundred seventy-one thousand, seven hundred eighty".