22178542079 has 2 divisors, whose sum is σ = 22178542080. Its totient is φ = 22178542078.

The previous prime is 22178542073. The next prime is 22178542147. The reversal of 22178542079 is 97024587122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22178542079 - 2⁴ = 22178542063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22178542073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11089271039 + 11089271040.

It is an arithmetic number, because the mean of its divisors is an integer number (11089271040).

Almost surely, 2^22178542079 is an apocalyptic number.

22178542079 is a deficient number, since it is larger than the sum of its proper divisors (1).

22178542079 is an equidigital number, since it uses as much as digits as its factorization.

22178542079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 22178542079 in words is "twenty-two billion, one hundred seventy-eight million, five hundred forty-two thousand, seventy-nine".