20055022170 has 64 divisors (see below), whose sum is σ = 49222080000. Its totient is φ = 5227908416.

The previous prime is 20055022157. The next prime is 20055022187. The reversal of 20055022170 is 7122055002.

It is a self number, because there is not a number n which added to its sum of digits gives 20055022170.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285181 + ... + 348479.

It is an arithmetic number, because the mean of its divisors is an integer number (769095000).

Almost surely, 2^20055022170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20055022170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24611040000).

20055022170 is an abundant number, since it is smaller than the sum of its proper divisors (29167057830).

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

20055022170 is a wasteful number, since it uses less digits than its factorization.

20055022170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63547.

The product of its (nonzero) digits is 1400, while the sum is 24.

Adding to 20055022170 its reverse (7122055002), we get a palindrome (27177077172).

The spelling of 20055022170 in words is "twenty billion, fifty-five million, twenty-two thousand, one hundred seventy".