20364056436 has 24 divisors (see below), whose sum is σ = 50016981280. Its totient is φ = 6430754592.

The previous prime is 20364056431. The next prime is 20364056473. The reversal of 20364056436 is 63465046302.

It is a junction number, because it is equal to n+sod(n) for n = 20364056394 and 20364056403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20364056431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44657791 + ... + 44658246.

Almost surely, 2^20364056436 is an apocalyptic number.

It is an amenable number.

20364056436 is an abundant number, since it is smaller than the sum of its proper divisors (29652924844).

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

20364056436 is a wasteful number, since it uses less digits than its factorization.

20364056436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89316063 (or 89316061 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 39.

The spelling of 20364056436 in words is "twenty billion, three hundred sixty-four million, fifty-six thousand, four hundred thirty-six".