20023262464 has 36 divisors (see below), whose sum is σ = 39984349860. Its totient is φ = 10007613440.

The previous prime is 20023262459. The next prime is 20023262471. The reversal of 20023262464 is 46426232002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19546276864 + 476985600 = 139808^2 + 21840^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684294 + ... + 712954.

It is an arithmetic number, because the mean of its divisors is an integer number (1110676385).

Almost surely, 2^20023262464 is an apocalyptic number.

It is an amenable number.

20023262464 is a deficient number, since it is larger than the sum of its proper divisors (19961087396).

20023262464 is an equidigital number, since it uses as much as digits as its factorization.

20023262464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31406 (or 31392 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 20023262464 its reverse (46426232002), we get a palindrome (66449494466).

The spelling of 20023262464 in words is "twenty billion, twenty-three million, two hundred sixty-two thousand, four hundred sixty-four".