8259100020 has 72 divisors (see below), whose sum is σ = 25105167360. Its totient is φ = 2197805760.

The previous prime is 8259100019. The next prime is 8259100049. The reversal of 8259100020 is 200019528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38325 + ... + 134115.

It is an arithmetic number, because the mean of its divisors is an integer number (348682880).

Almost surely, 2^8259100020 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 8259100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12552583680).

8259100020 is an abundant number, since it is smaller than the sum of its proper divisors (16846067340).

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

8259100020 is a wasteful number, since it uses less digits than its factorization.

8259100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96285 (or 96280 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 8259100020 is about 90879.5907781280. The cubic root of 8259100020 is about 2021.3626739841.

Adding to 8259100020 its reverse (200019528), we get a palindrome (8459119548).

The spelling of 8259100020 in words is "eight billion, two hundred fifty-nine million, one hundred thousand, twenty".