22540678229 has 2 divisors, whose sum is σ = 22540678230. Its totient is φ = 22540678228.

The previous prime is 22540678213. The next prime is 22540678289. The reversal of 22540678229 is 92287604522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19412848900 + 3127829329 = 139330^2 + 55927^2 .

It is a cyclic number.

It is not a de Polignac number, because 22540678229 - 2⁴ = 22540678213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22540678289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11270339114 + 11270339115.

It is an arithmetic number, because the mean of its divisors is an integer number (11270339115).

Almost surely, 2^22540678229 is an apocalyptic number.

It is an amenable number.

22540678229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22540678229 is an equidigital number, since it uses as much as digits as its factorization.

22540678229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 22540678229 in words is "twenty-two billion, five hundred forty million, six hundred seventy-eight thousand, two hundred twenty-nine".