20426237044 has 6 divisors (see below), whose sum is σ = 35745914834. Its totient is φ = 10213118520.

The previous prime is 20426237017. The next prime is 20426237093. The reversal of 20426237044 is 44073262402.

It can be written as a sum of positive squares in only one way, i.e., 16419347044 + 4006890000 = 128138^2 + 63300^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553279627 + ... + 2553279634.

Almost surely, 2^20426237044 is an apocalyptic number.

It is an amenable number.

20426237044 is a deficient number, since it is larger than the sum of its proper divisors (15319677790).

20426237044 is a wasteful number, since it uses less digits than its factorization.

20426237044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106559265 (or 5106559263 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 34.

Adding to 20426237044 its reverse (44073262402), we get a palindrome (64499499446).

The spelling of 20426237044 in words is "twenty billion, four hundred twenty-six million, two hundred thirty-seven thousand, forty-four".