22065137791 has 16 divisors (see below), whose sum is σ = 23133648384. Its totient is φ = 21005940384.

The previous prime is 22065137767. The next prime is 22065137797. The reversal of 22065137791 is 19773156022.

It is a cyclic number.

It is not a de Polignac number, because 22065137791 - 2³¹ = 19917654143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22065137797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5809305 + ... + 5813101.

It is an arithmetic number, because the mean of its divisors is an integer number (1445853024).

Almost surely, 2^22065137791 is an apocalyptic number.

22065137791 is a deficient number, since it is larger than the sum of its proper divisors (1068510593).

22065137791 is a wasteful number, since it uses less digits than its factorization.

22065137791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950.

The product of its (nonzero) digits is 158760, while the sum is 43.

The spelling of 22065137791 in words is "twenty-two billion, sixty-five million, one hundred thirty-seven thousand, seven hundred ninety-one".