20823927488 has 168 divisors, whose sum is σ = 51949148832. Its totient is φ = 8209022976.

The previous prime is 20823927461. The next prime is 20823927499. The reversal of 20823927488 is 88472932802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14390381 + ... + 14391827.

It is an arithmetic number, because the mean of its divisors is an integer number (309221124).

Almost surely, 2^20823927488 is an apocalyptic number.

20823927488 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 20823927488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25974574416).

20823927488 is an abundant number, since it is smaller than the sum of its proper divisors (31125221344).

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

20823927488 is a wasteful number, since it uses less digits than its factorization.

20823927488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 20823927488 in words is "twenty billion, eight hundred twenty-three million, nine hundred twenty-seven thousand, four hundred eighty-eight".