22431040020 has 60 divisors (see below), whose sum is σ = 70367008404. Its totient is φ = 5981610240.

The previous prime is 22431039977. The next prime is 22431040087. The reversal of 22431040020 is 2004013422.

22431040020 is a `hidden beast` number, since 2 + 243 + 1 + 0 + 400 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17508053124 + 4922986896 = 132318^2 + 70164^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22431039975 and 22431040002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6921541 + ... + 6924780.

Almost surely, 2^22431040020 is an apocalyptic number.

22431040020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22431040020 is an abundant number, since it is smaller than the sum of its proper divisors (47935968384).

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

22431040020 is a wasteful number, since it uses less digits than its factorization.

22431040020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13846342 (or 13846331 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22431040020 its reverse (2004013422), we get a palindrome (24435053442).

The spelling of 22431040020 in words is "twenty-two billion, four hundred thirty-one million, forty thousand, twenty".