22185506713 has 2 divisors, whose sum is σ = 22185506714. Its totient is φ = 22185506712.

The previous prime is 22185506699. The next prime is 22185506741. The reversal of 22185506713 is 31760558122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22185506704 + 9 = 148948^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 22185506713 - 2²¹ = 22183409561 is a prime.

It is a super-2 number, since 2×22185506713² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22185506743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11092753356 + 11092753357.

It is an arithmetic number, because the mean of its divisors is an integer number (11092753357).

Almost surely, 2^22185506713 is an apocalyptic number.

It is an amenable number.

22185506713 is a deficient number, since it is larger than the sum of its proper divisors (1).

22185506713 is an equidigital number, since it uses as much as digits as its factorization.

22185506713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 22185506713 in words is "twenty-two billion, one hundred eighty-five million, five hundred six thousand, seven hundred thirteen".