20268222216 has 32 divisors (see below), whose sum is σ = 55276970400. Its totient is φ = 6141885440.

The previous prime is 20268222181. The next prime is 20268222217. The reversal of 20268222216 is 61222286202.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20268222217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38386521 + ... + 38387048.

It is an arithmetic number, because the mean of its divisors is an integer number (1727405325).

Almost surely, 2^20268222216 is an apocalyptic number.

It is an amenable number.

20268222216 is an abundant number, since it is smaller than the sum of its proper divisors (35008748184).

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

20268222216 is a wasteful number, since it uses less digits than its factorization.

20268222216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76773589 (or 76773585 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 20268222216 in words is "twenty billion, two hundred sixty-eight million, two hundred twenty-two thousand, two hundred sixteen".