20436160566 has 64 divisors (see below), whose sum is σ = 42832742400. Its totient is φ = 6492510720.

The previous prime is 20436160519. The next prime is 20436160567. The reversal of 20436160566 is 66506163402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20436160567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5385966 + ... + 5389758.

It is an arithmetic number, because the mean of its divisors is an integer number (669261600).

Almost surely, 2^20436160566 is an apocalyptic number.

20436160566 is an abundant number, since it is smaller than the sum of its proper divisors (22396581834).

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

20436160566 is a wasteful number, since it uses less digits than its factorization.

20436160566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4261.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 20436160566 in words is "twenty billion, four hundred thirty-six million, one hundred sixty thousand, five hundred sixty-six".