20442203634 has 16 divisors (see below), whose sum is σ = 40929494688. Its totient is φ = 6806553312.

The previous prime is 20442203633. The next prime is 20442203657. The reversal of 20442203634 is 43630224402.

It is not an unprimeable number, because it can be changed into a prime (20442203633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872747 + ... + 1883630.

It is an arithmetic number, because the mean of its divisors is an integer number (2558093418).

Almost surely, 2^20442203634 is an apocalyptic number.

20442203634 is an abundant number, since it is smaller than the sum of its proper divisors (20487291054).

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

20442203634 is a wasteful number, since it uses less digits than its factorization.

20442203634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757289.

The product of its (nonzero) digits is 27648, while the sum is 30.

The spelling of 20442203634 in words is "twenty billion, four hundred forty-two million, two hundred three thousand, six hundred thirty-four".