8265809972 has 48 divisors (see below), whose sum is σ = 17595906048. Its totient is φ = 3316615680.

The previous prime is 8265809969. The next prime is 8265810011. The reversal of 8265809972 is 2799085628.

It is a super-2 number, since 2×8265809972² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45458 + ... + 136374.

It is an arithmetic number, because the mean of its divisors is an integer number (366581376).

Almost surely, 2^8265809972 is an apocalyptic number.

It is a pronic number, being equal to 90916×90917.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8265809972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8797953024).

8265809972 is an abundant number, since it is smaller than the sum of its proper divisors (9330096076).

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

8265809972 is a wasteful number, since it uses less digits than its factorization.

8265809972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91136 (or 91134 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The square root of 8265809972 is about 90916.4999986251. The cubic root of 8265809972 is about 2021.9099319611.

The spelling of 8265809972 in words is "eight billion, two hundred sixty-five million, eight hundred nine thousand, nine hundred seventy-two".