20327345920 has 72 divisors (see below), whose sum is σ = 55646133984. Its totient is φ = 6969372672.

The previous prime is 20327345911. The next prime is 20327345953. The reversal of 20327345920 is 2954372302.

It is a super-3 number, since 3×20327345920³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20327345920.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1125379 + ... + 1143298.

It is an arithmetic number, because the mean of its divisors is an integer number (772862972).

Almost surely, 2^20327345920 is an apocalyptic number.

20327345920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20327345920 is an abundant number, since it is smaller than the sum of its proper divisors (35318788064).

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

20327345920 is an equidigital number, since it uses as much as digits as its factorization.

20327345920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268705 (or 2268691 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 20327345920 in words is "twenty billion, three hundred twenty-seven million, three hundred forty-five thousand, nine hundred twenty".