22161383577 has 12 divisors (see below), whose sum is σ = 32255247024. Its totient is φ = 14661474360.

The previous prime is 22161383561. The next prime is 22161383579. The reversal of 22161383577 is 77538316122.

22161383577 is a `hidden beast` number, since 2 + 21 + 613 + 8 + 3 + 5 + 7 + 7 = 666.

It is not a de Polignac number, because 22161383577 - 2⁴ = 22161383561 is a prime.

It is a super-2 number, since 2×22161383577² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22161383579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9397203 + ... + 9399560.

It is an arithmetic number, because the mean of its divisors is an integer number (2687937252).

Almost surely, 2^22161383577 is an apocalyptic number.

It is an amenable number.

22161383577 is a deficient number, since it is larger than the sum of its proper divisors (10093863447).

22161383577 is a wasteful number, since it uses less digits than its factorization.

22161383577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18796900 (or 18796897 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

Adding to 22161383577 its reverse (77538316122), we get a palindrome (99699699699).

The spelling of 22161383577 in words is "twenty-two billion, one hundred sixty-one million, three hundred eighty-three thousand, five hundred seventy-seven".