22403787842 has 18 divisors (see below), whose sum is σ = 33951785049. Its totient is φ = 11087693640.

The previous prime is 22403787821. The next prime is 22403787853. The reversal of 22403787842 is 24878730422.

It can be written as a sum of positive squares in 2 ways, for example, as 21497717641 + 906070201 = 146621^2 + 30101^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105839.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23072417 + ... + 23073387.

Almost surely, 2^22403787842 is an apocalyptic number.

22403787842 is a deficient number, since it is larger than the sum of its proper divisors (11547997207).

22403787842 is an frugal number, since it uses more digits than its factorization.

22403787842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 47.

The spelling of 22403787842 in words is "twenty-two billion, four hundred three million, seven hundred eighty-seven thousand, eight hundred forty-two".