161822241867 has 16 divisors (see below), whose sum is σ = 253483792128. Its totient is φ = 90529925280.

The previous prime is 161822241829. The next prime is 161822241869. The reversal of 161822241867 is 768142228161.

It is a happy number.

It is not a de Polignac number, because 161822241867 - 2⁷ = 161822241739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161822241869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188603583 + ... + 188604440.

It is an arithmetic number, because the mean of its divisors is an integer number (15842737008).

Almost surely, 2^161822241867 is an apocalyptic number.

161822241867 is a deficient number, since it is larger than the sum of its proper divisors (91661550261).

161822241867 is a wasteful number, since it uses less digits than its factorization.

161822241867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377208050.

The product of its digits is 516096, while the sum is 48.

The spelling of 161822241867 in words is "one hundred sixty-one billion, eight hundred twenty-two million, two hundred forty-one thousand, eight hundred sixty-seven".