20332243140 has 96 divisors (see below), whose sum is σ = 65374525440. Its totient is φ = 4669603200.

The previous prime is 20332243073. The next prime is 20332243147. The reversal of 20332243140 is 4134223302.

It is a super-2 number, since 2×20332243140² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20332243140.

It is not an unprimeable number, because it can be changed into a prime (20332243147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 798156 + ... + 823235.

It is an arithmetic number, because the mean of its divisors is an integer number (680984640).

Almost surely, 2^20332243140 is an apocalyptic number.

20332243140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20332243140 is an abundant number, since it is smaller than the sum of its proper divisors (45042282300).

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

20332243140 is a wasteful number, since it uses less digits than its factorization.

20332243140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621433 (or 1621431 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20332243140 its reverse (4134223302), we get a palindrome (24466466442).

The spelling of 20332243140 in words is "twenty billion, three hundred thirty-two million, two hundred forty-three thousand, one hundred forty".