20155488222 has 8 divisors (see below), whose sum is σ = 40310976456. Its totient is φ = 6718496072.

The previous prime is 20155488191. The next prime is 20155488229. The reversal of 20155488222 is 22288455102.

It is a sphenic number, since it is the product of 3 distinct primes.

20155488222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20155488229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679624013 + ... + 1679624024.

It is an arithmetic number, because the mean of its divisors is an integer number (5038872057).

Almost surely, 2^20155488222 is an apocalyptic number.

20155488222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20155488222 is a wasteful number, since it uses less digits than its factorization.

20155488222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359248042.

The product of its (nonzero) digits is 102400, while the sum is 39.

The spelling of 20155488222 in words is "twenty billion, one hundred fifty-five million, four hundred eighty-eight thousand, two hundred twenty-two".