20622043161 has 12 divisors (see below), whose sum is σ = 29816813988. Its totient is φ = 13734451104.

The previous prime is 20622043111. The next prime is 20622043181. The reversal of 20622043161 is 16134022602.

20622043161 is a `hidden beast` number, since 2 + 0 + 6 + 220 + 431 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9713285136 + 10908758025 = 98556^2 + 104445^2 .

It is not a de Polignac number, because 20622043161 - 2⁶ = 20622043097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20622043111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1121850 + ... + 1140083.

It is an arithmetic number, because the mean of its divisors is an integer number (2484734499).

Almost surely, 2^20622043161 is an apocalyptic number.

It is an amenable number.

20622043161 is a deficient number, since it is larger than the sum of its proper divisors (9194770827).

20622043161 is a wasteful number, since it uses less digits than its factorization.

20622043161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262952 (or 2262949 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 20622043161 its reverse (16134022602), we get a palindrome (36756065763).

The spelling of 20622043161 in words is "twenty billion, six hundred twenty-two million, forty-three thousand, one hundred sixty-one".