222656138539 has 2 divisors, whose sum is σ = 222656138540. Its totient is φ = 222656138538.

The previous prime is 222656138531. The next prime is 222656138543. The reversal of 222656138539 is 935831656222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222656138539 - 2³ = 222656138531 is a prime.

It is a super-2 number, since 2×222656138539² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222656138531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111328069269 + 111328069270.

It is an arithmetic number, because the mean of its divisors is an integer number (111328069270).

Almost surely, 2^222656138539 is an apocalyptic number.

222656138539 is a deficient number, since it is larger than the sum of its proper divisors (1).

222656138539 is an equidigital number, since it uses as much as digits as its factorization.

222656138539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 52.

The spelling of 222656138539 in words is "two hundred twenty-two billion, six hundred fifty-six million, one hundred thirty-eight thousand, five hundred thirty-nine".