22912574161 has 9 divisors (see below), whose sum is σ = 23047934193. Its totient is φ = 22778007120.

The previous prime is 22912574141. The next prime is 22912574197. The reversal of 22912574161 is 16147521922.

The square root of 22912574161 is 151369.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 12581884561 + 10330689600 = 112169^2 + 101640^2 .

It is not a de Polignac number, because 22912574161 - 2¹¹ = 22912572113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22912574141) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34663171 + ... + 34663831.

It is an arithmetic number, because the mean of its divisors is an integer number (2560881577).

Almost surely, 2^22912574161 is an apocalyptic number.

22912574161 is the 151369-th square number.

22912574161 is the 75685-th centered octagonal number.

It is an amenable number.

22912574161 is a deficient number, since it is larger than the sum of its proper divisors (135360032).

22912574161 is an frugal number, since it uses more digits than its factorization.

22912574161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 890 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The spelling of 22912574161 in words is "twenty-two billion, nine hundred twelve million, five hundred seventy-four thousand, one hundred sixty-one".