8520109944 has 32 divisors (see below), whose sum is σ = 21305261520. Its totient is φ = 2839371776.

The previous prime is 8520109909. The next prime is 8520109981. The reversal of 8520109944 is 4499010258.

It is a junction number, because it is equal to n+sod(n) for n = 8520109896 and 8520109905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69112 + ... + 147704.

Almost surely, 2^8520109944 is an apocalyptic number.

It is an amenable number.

8520109944 is an abundant number, since it is smaller than the sum of its proper divisors (12785151576).

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

8520109944 is a wasteful number, since it uses less digits than its factorization.

8520109944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83119 (or 83115 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 8520109944 is about 92304.4416266086. The cubic root of 8520109944 is about 2042.4357315205.

The spelling of 8520109944 in words is "eight billion, five hundred twenty million, one hundred nine thousand, nine hundred forty-four".