22729973779 has 2 divisors, whose sum is σ = 22729973780. Its totient is φ = 22729973778.

The previous prime is 22729973731. The next prime is 22729973801. The reversal of 22729973779 is 97737992722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22729973779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22729973779.

It is not a weakly prime, because it can be changed into another prime (22729971779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11364986889 + 11364986890.

It is an arithmetic number, because the mean of its divisors is an integer number (11364986890).

Almost surely, 2^22729973779 is an apocalyptic number.

22729973779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22729973779 is an equidigital number, since it uses as much as digits as its factorization.

22729973779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42007896, while the sum is 64.

The spelling of 22729973779 in words is "twenty-two billion, seven hundred twenty-nine million, nine hundred seventy-three thousand, seven hundred seventy-nine".