20321895905376 has 96 divisors (see below), whose sum is σ = 60472038493440. Its totient is φ = 5923791512064.

The previous prime is 20321895905371. The next prime is 20321895905407. The reversal of 20321895905376 is 67350959812302.

It is a tau number, because it is divible by the number of its divisors (96).

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428491300 + ... + 428538723.

It is an arithmetic number, because the mean of its divisors is an integer number (629917067640).

Almost surely, 2^{20321895905376} is an apocalyptic number.

20321895905376 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20321895905376 is an abundant number, since it is smaller than the sum of its proper divisors (40150142588064).

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

20321895905376 is a wasteful number, since it uses less digits than its factorization.

20321895905376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857030068 (or 857030060 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 60.

The spelling of 20321895905376 in words is "twenty trillion, three hundred twenty-one billion, eight hundred ninety-five million, nine hundred five thousand, three hundred seventy-six".