8512156920 has 128 divisors (see below), whose sum is σ = 25843314240. Its totient is φ = 2242805760.

The previous prime is 8512156909. The next prime is 8512156969. The reversal of 8512156920 is 296512158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3634950 + ... + 3637290.

Almost surely, 2^8512156920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8512156920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12921657120).

8512156920 is an abundant number, since it is smaller than the sum of its proper divisors (17331157320).

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

8512156920 is a wasteful number, since it uses less digits than its factorization.

8512156920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705 (or 2701 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 8512156920 is about 92261.3511715496. The cubic root of 8512156920 is about 2041.8000356099.

The spelling of 8512156920 in words is "eight billion, five hundred twelve million, one hundred fifty-six thousand, nine hundred twenty".