8121105672 has 16 divisors (see below), whose sum is σ = 20302764240. Its totient is φ = 2707035216.

The previous prime is 8121105661. The next prime is 8121105737. The reversal of 8121105672 is 2765011218.

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, 169189678 + ... + 169189725.

It is an arithmetic number, because the mean of its divisors is an integer number (1268922765).

Almost surely, 2^8121105672 is an apocalyptic number.

It is an amenable number.

8121105672 is an abundant number, since it is smaller than the sum of its proper divisors (12181658568).

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

8121105672 is a wasteful number, since it uses less digits than its factorization.

8121105672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338379412 (or 338379408 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 8121105672 is about 90117.1774524702. The cubic root of 8121105672 is about 2010.0416377108.

The spelling of 8121105672 in words is "eight billion, one hundred twenty-one million, one hundred five thousand, six hundred seventy-two".