16566427122 has 16 divisors (see below), whose sum is σ = 37866119232. Its totient is φ = 4733264880.

The previous prime is 16566427117. The next prime is 16566427147. The reversal of 16566427122 is 22172466561.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 394438741 = 16566427122 / (1 + 6 + 5 + 6 + 6 + 4 + 2 + 7 + 1 + 2 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197219329 + ... + 197219412.

It is an arithmetic number, because the mean of its divisors is an integer number (2366632452).

Almost surely, 2^16566427122 is an apocalyptic number.

16566427122 is an abundant number, since it is smaller than the sum of its proper divisors (21299692110).

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

16566427122 is a wasteful number, since it uses less digits than its factorization.

16566427122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394438753.

The product of its digits is 241920, while the sum is 42.

The spelling of 16566427122 in words is "sixteen billion, five hundred sixty-six million, four hundred twenty-seven thousand, one hundred twenty-two".