161668227322 has 24 divisors (see below), whose sum is σ = 282215155104. Its totient is φ = 69256763352.

The previous prime is 161668227319. The next prime is 161668227353. The reversal of 161668227322 is 223722866161.

161668227322 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161668227322² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121438 + ... + 581449.

It is an arithmetic number, because the mean of its divisors is an integer number (11758964796).

Almost surely, 2^161668227322 is an apocalyptic number.

161668227322 is a deficient number, since it is larger than the sum of its proper divisors (120546927782).

161668227322 is a wasteful number, since it uses less digits than its factorization.

161668227322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705250 (or 705243 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The spelling of 161668227322 in words is "one hundred sixty-one billion, six hundred sixty-eight million, two hundred twenty-seven thousand, three hundred twenty-two".