20321895905375 has 16 divisors (see below), whose sum is σ = 26047178152320. Its totient is φ = 15818124376800.

The previous prime is 20321895905371. The next prime is 20321895905407. The reversal of 20321895905375 is 57350959812302.

It is not a de Polignac number, because 20321895905375 - 2² = 20321895905371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321895905371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2196957095 + ... + 2196966344.

It is an arithmetic number, because the mean of its divisors is an integer number (1627948634520).

Almost surely, 2^{20321895905375} is an apocalyptic number.

20321895905375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20321895905375 is a deficient number, since it is larger than the sum of its proper divisors (5725282246945).

20321895905375 is an equidigital number, since it uses as much as digits as its factorization.

20321895905375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393923491 (or 4393923481 counting only the distinct ones).

The product of its (nonzero) digits is 20412000, while the sum is 59.

The spelling of 20321895905375 in words is "twenty trillion, three hundred twenty-one billion, eight hundred ninety-five million, nine hundred five thousand, three hundred seventy-five".