20461564422 has 24 divisors (see below), whose sum is σ = 47743650864. Its totient is φ = 6295865904.

The previous prime is 20461564421. The next prime is 20461564471. The reversal of 20461564422 is 22446516402.

20461564422 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 1 + 5 + 644 + 2 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20461564421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43721058 + ... + 43721525.

It is an arithmetic number, because the mean of its divisors is an integer number (1989318786).

Almost surely, 2^20461564422 is an apocalyptic number.

20461564422 is an abundant number, since it is smaller than the sum of its proper divisors (27282086442).

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

20461564422 is a wasteful number, since it uses less digits than its factorization.

20461564422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87442604 (or 87442601 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 20461564422 in words is "twenty billion, four hundred sixty-one million, five hundred sixty-four thousand, four hundred twenty-two".