20331245344 has 96 divisors (see below), whose sum is σ = 42537277440. Its totient is φ = 9551692800.

The previous prime is 20331245323. The next prime is 20331245357. The reversal of 20331245344 is 44354213302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4778322 + ... + 4782574.

It is an arithmetic number, because the mean of its divisors is an integer number (443096640).

Almost surely, 2^20331245344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20331245344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21268638720).

20331245344 is an abundant number, since it is smaller than the sum of its proper divisors (22206032096).

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

20331245344 is a wasteful number, since it uses less digits than its factorization.

20331245344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434 (or 4426 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20331245344 its reverse (44354213302), we get a palindrome (64685458646).

The spelling of 20331245344 in words is "twenty billion, three hundred thirty-one million, two hundred forty-five thousand, three hundred forty-four".