20442186716 has 144 divisors (see below), whose sum is σ = 44485560000. Its totient is φ = 8214369408.

The previous prime is 20442186701. The next prime is 20442186757. The reversal of 20442186716 is 61768124402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73798370 + ... + 73798646.

It is an arithmetic number, because the mean of its divisors is an integer number (308927500).

Almost surely, 2^20442186716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20442186716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22242780000).

20442186716 is an abundant number, since it is smaller than the sum of its proper divisors (24043373284).

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

20442186716 is a wasteful number, since it uses less digits than its factorization.

20442186716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 20442186716 in words is "twenty billion, four hundred forty-two million, one hundred eighty-six thousand, seven hundred sixteen".