7881672172 has 12 divisors (see below), whose sum is σ = 15046828776. Its totient is φ = 3582578240.

The previous prime is 7881672151. The next prime is 7881672181. The reversal of 7881672172 is 2712761887.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89564413 + ... + 89564500.

It is an arithmetic number, because the mean of its divisors is an integer number (1253902398).

Almost surely, 2^7881672172 is an apocalyptic number.

It is an amenable number.

7881672172 is a deficient number, since it is larger than the sum of its proper divisors (7165156604).

7881672172 is a wasteful number, since it uses less digits than its factorization.

7881672172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179128928 (or 179128926 counting only the distinct ones).

The product of its digits is 526848, while the sum is 49.

The square root of 7881672172 is about 88778.7822173744. The cubic root of 7881672172 is about 1990.0903279622.

The spelling of 7881672172 in words is "seven billion, eight hundred eighty-one million, six hundred seventy-two thousand, one hundred seventy-two".