8671125921 has 8 divisors (see below), whose sum is σ = 11564993760. Its totient is φ = 5779004352.

The previous prime is 8671125899. The next prime is 8671125929. The reversal of 8671125921 is 1295211768.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8671125921 - 2⁹ = 8671125409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8671125929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424936 + ... + 444873.

It is an arithmetic number, because the mean of its divisors is an integer number (1445624220).

Almost surely, 2^8671125921 is an apocalyptic number.

It is an amenable number.

8671125921 is a deficient number, since it is larger than the sum of its proper divisors (2893867839).

8671125921 is a wasteful number, since it uses less digits than its factorization.

8671125921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873135.

The product of its digits is 60480, while the sum is 42.

The square root of 8671125921 is about 93118.8805828335. The cubic root of 8671125921 is about 2054.4322836665.

The spelling of 8671125921 in words is "eight billion, six hundred seventy-one million, one hundred twenty-five thousand, nine hundred twenty-one".