22781305061 has 2 divisors, whose sum is σ = 22781305062. Its totient is φ = 22781305060.

The previous prime is 22781305003. The next prime is 22781305097. The reversal of 22781305061 is 16050318722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11546577025 + 11234728036 = 107455^2 + 105994^2 .

It is a cyclic number.

It is not a de Polignac number, because 22781305061 - 2¹⁰ = 22781304037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22781305961) 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 as a sum of consecutive naturals, namely, 11390652530 + 11390652531.

It is an arithmetic number, because the mean of its divisors is an integer number (11390652531).

Almost surely, 2^22781305061 is an apocalyptic number.

It is an amenable number.

22781305061 is a deficient number, since it is larger than the sum of its proper divisors (1).

22781305061 is an equidigital number, since it uses as much as digits as its factorization.

22781305061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 22781305061 in words is "twenty-two billion, seven hundred eighty-one million, three hundred five thousand, sixty-one".