22277783261 has 2 divisors, whose sum is σ = 22277783262. Its totient is φ = 22277783260.

The previous prime is 22277783257. The next prime is 22277783389. The reversal of 22277783261 is 16238777222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19284599161 + 2993184100 = 138869^2 + 54710^2 .

It is a cyclic number.

It is not a de Polignac number, because 22277783261 - 2² = 22277783257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22277783201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11138891630 + 11138891631.

It is an arithmetic number, because the mean of its divisors is an integer number (11138891631).

Almost surely, 2^22277783261 is an apocalyptic number.

It is an amenable number.

22277783261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22277783261 is an equidigital number, since it uses as much as digits as its factorization.

22277783261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 47.

The spelling of 22277783261 in words is "twenty-two billion, two hundred seventy-seven million, seven hundred eighty-three thousand, two hundred sixty-one".