8109123072 has 40 divisors (see below), whose sum is σ = 21603214776. Its totient is φ = 2703040512.

The previous prime is 8109123067. The next prime is 8109123073. The reversal of 8109123072 is 2703219018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8109123073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638153 + ... + 2641224.

Almost surely, 2^8109123072 is an apocalyptic number.

It is an amenable number.

8109123072 is an abundant number, since it is smaller than the sum of its proper divisors (13494091704).

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

8109123072 is an equidigital number, since it uses as much as digits as its factorization.

8109123072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279398 (or 5279382 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 8109123072 is about 90050.6694700267. The cubic root of 8109123072 is about 2009.0525531536.

The spelling of 8109123072 in words is "eight billion, one hundred nine million, one hundred twenty-three thousand, seventy-two".