162765222661 has 4 divisors (see below), whose sum is σ = 165836264652. Its totient is φ = 159694180672.

The previous prime is 162765222649. The next prime is 162765222667. The reversal of 162765222661 is 166222567261.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50319013761 + 112446208900 = 224319^2 + 335330^2 .

It is a cyclic number.

It is not a de Polignac number, because 162765222661 - 2⁵ = 162765222629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162765222667) 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, 1535520916 + ... + 1535521021.

It is an arithmetic number, because the mean of its divisors is an integer number (41459066163).

Almost surely, 2^162765222661 is an apocalyptic number.

It is an amenable number.

162765222661 is a deficient number, since it is larger than the sum of its proper divisors (3071041991).

162765222661 is an equidigital number, since it uses as much as digits as its factorization.

162765222661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071041990.

The product of its digits is 725760, while the sum is 46.

The spelling of 162765222661 in words is "one hundred sixty-two billion, seven hundred sixty-five million, two hundred twenty-two thousand, six hundred sixty-one".