162166484091 has 4 divisors (see below), whose sum is σ = 216221978792. Its totient is φ = 108110989392.

The previous prime is 162166484047. The next prime is 162166484093. The reversal of 162166484091 is 190484661261.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 162166484091 - 2¹⁹ = 162165959803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162166484091.

It is not an unprimeable number, because it can be changed into a prime (162166484093) 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, 27027747346 + ... + 27027747351.

It is an arithmetic number, because the mean of its divisors is an integer number (54055494698).

Almost surely, 2^162166484091 is an apocalyptic number.

162166484091 is a deficient number, since it is larger than the sum of its proper divisors (54055494701).

162166484091 is an equidigital number, since it uses as much as digits as its factorization.

162166484091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54055494700.

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 162166484091 in words is "one hundred sixty-two billion, one hundred sixty-six million, four hundred eighty-four thousand, ninety-one".