20733468820 has 48 divisors (see below), whose sum is σ = 43950348288. Its totient is φ = 8215482240.

The previous prime is 20733468779. The next prime is 20733468823. The reversal of 20733468820 is 2886433702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20733468823) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1749234 + ... + 1761046.

It is an arithmetic number, because the mean of its divisors is an integer number (915632256).

Almost surely, 2^20733468820 is an apocalyptic number.

20733468820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20733468820 is an abundant number, since it is smaller than the sum of its proper divisors (23216879468).

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

20733468820 is a wasteful number, since it uses less digits than its factorization.

20733468820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12640 (or 12638 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 20733468820 in words is "twenty billion, seven hundred thirty-three million, four hundred sixty-eight thousand, eight hundred twenty".