20932791768 has 240 divisors, whose sum is σ = 68509556280. Its totient is φ = 5978593152.

The previous prime is 20932791731. The next prime is 20932791787. The reversal of 20932791768 is 86719723902.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 7714380 + ... + 7717092.

Almost surely, 2^20932791768 is an apocalyptic number.

20932791768 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 20932791768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34254778140).

20932791768 is an abundant number, since it is smaller than the sum of its proper divisors (47576764512).

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

20932791768 is an frugal number, since it uses more digits than its factorization.

20932791768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 20932791768 in words is "twenty billion, nine hundred thirty-two million, seven hundred ninety-one thousand, seven hundred sixty-eight".