22646520544393 has 2 divisors, whose sum is σ = 22646520544394. Its totient is φ = 22646520544392.

The previous prime is 22646520544381. The next prime is 22646520544429. The reversal of 22646520544393 is 39344502564622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13998874631049 + 8647645913344 = 3741507^2 + 2940688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22646520544393 is a prime.

It is a super-2 number, since 2×22646520544393² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22646520544313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11323260272196 + 11323260272197.

It is an arithmetic number, because the mean of its divisors is an integer number (11323260272197).

Almost surely, 2^{22646520544393} is an apocalyptic number.

It is an amenable number.

22646520544393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22646520544393 is an equidigital number, since it uses as much as digits as its factorization.

22646520544393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37324800, while the sum is 55.

The spelling of 22646520544393 in words is "twenty-two trillion, six hundred forty-six billion, five hundred twenty million, five hundred forty-four thousand, three hundred ninety-three".