20826366288 has 160 divisors (see below), whose sum is σ = 66434414592. Its totient is φ = 5474649600.

The previous prime is 20826366283. The next prime is 20826366331. The reversal of 20826366288 is 88266362802.

It is a self number, because there is not a number n which added to its sum of digits gives 20826366288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20826366283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1350783 + ... + 1366113.

Almost surely, 2^20826366288 is an apocalyptic number.

20826366288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20826366288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33217207296).

20826366288 is an abundant number, since it is smaller than the sum of its proper divisors (45608048304).

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

20826366288 is a wasteful number, since it uses less digits than its factorization.

20826366288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15673 (or 15667 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 20826366288 in words is "twenty billion, eight hundred twenty-six million, three hundred sixty-six thousand, two hundred eighty-eight".