20331440013000 has 128 divisors (see below), whose sum is σ = 63473729379840. Its totient is φ = 5418329600000.

The previous prime is 20331440012981. The next prime is 20331440013023. The reversal of 20331440013000 is 31004413302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2686465 + ... + 6919535.

It is an arithmetic number, because the mean of its divisors is an integer number (495888510780).

Almost surely, 2^{20331440013000} is an apocalyptic number.

20331440013000 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 20331440013000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31736864689920).

20331440013000 is an abundant number, since it is smaller than the sum of its proper divisors (43142289366840).

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

20331440013000 is a wasteful number, since it uses less digits than its factorization.

20331440013000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234696 (or 4234682 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20331440013000 its reverse (31004413302), we get a palindrome (20362444426302).

The spelling of 20331440013000 in words is "twenty trillion, three hundred thirty-one billion, four hundred forty million, thirteen thousand".