622622566221666 has 32 divisors (see below), whose sum is σ = 1247600892795840. Its totient is φ = 207148313765184.

The previous prime is 622622566221661. The next prime is 622622566221701. The reversal of 622622566221666 is 666122665226226.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (622622566221661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18653076 + ... + 39914688.

It is an arithmetic number, because the mean of its divisors is an integer number (38987527899870).

Almost surely, 2^{622622566221666} is an apocalyptic number.

622622566221666 is an abundant number, since it is smaller than the sum of its proper divisors (624978326574174).

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

622622566221666 is a wasteful number, since it uses less digits than its factorization.

622622566221666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21270850.

The product of its digits is 89579520, while the sum is 60.

The spelling of 622622566221666 in words is "six hundred twenty-two trillion, six hundred twenty-two billion, five hundred sixty-six million, two hundred twenty-one thousand, six hundred sixty-six".