16966189081 has 4 divisors (see below), whose sum is σ = 16966721664. Its totient is φ = 16965656500.

The previous prime is 16966189033. The next prime is 16966189147. The reversal of 16966189081 is 18098166961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16966189081 - 2³³ = 8376254489 is a prime.

It is a super-2 number, since 2×16966189081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16966189001) 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, 215245 + ... + 283306.

It is an arithmetic number, because the mean of its divisors is an integer number (4241680416).

Almost surely, 2^16966189081 is an apocalyptic number.

It is an amenable number.

16966189081 is a deficient number, since it is larger than the sum of its proper divisors (532583).

16966189081 is an equidigital number, since it uses as much as digits as its factorization.

16966189081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532582.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 16966189081 in words is "sixteen billion, nine hundred sixty-six million, one hundred eighty-nine thousand, eighty-one".