20331695985600 has 1344 divisors, whose sum is σ = 76582629826560. Its totient is φ = 4690383667200.

The previous prime is 20331695985569. The next prime is 20331695985607. The reversal of 20331695985600 is 658959613302.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331695985607) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 10866752665 + ... + 10866754535.

Almost surely, 2^{20331695985600} is an apocalyptic number.

20331695985600 is a gapful number since it is divisible by the number (20) 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 20331695985600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38291314913280).

20331695985600 is an abundant number, since it is smaller than the sum of its proper divisors (56250933840960).

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

20331695985600 is a wasteful number, since it uses less digits than its factorization.

20331695985600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 20331695985600 in words is "twenty trillion, three hundred thirty-one billion, six hundred ninety-five million, nine hundred eighty-five thousand, six hundred".