20023264136 has 64 divisors (see below), whose sum is σ = 39852691200. Its totient is φ = 9414720000.

The previous prime is 20023264111. The next prime is 20023264141. The reversal of 20023264136 is 63146232002.

It is a super-2 number, since 2×20023264136² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 20023264099 and 20023264108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7142111 + ... + 7144913.

It is an arithmetic number, because the mean of its divisors is an integer number (622698300).

Almost surely, 2^20023264136 is an apocalyptic number.

It is an amenable number.

20023264136 is a deficient number, since it is larger than the sum of its proper divisors (19829427064).

20023264136 is a wasteful number, since it uses less digits than its factorization.

20023264136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630 (or 3626 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 20023264136 its reverse (63146232002), we get a palindrome (83169496138).

The spelling of 20023264136 in words is "twenty billion, twenty-three million, two hundred sixty-four thousand, one hundred thirty-six".