16422567779 has 2 divisors, whose sum is σ = 16422567780. Its totient is φ = 16422567778.

The previous prime is 16422567767. The next prime is 16422567793. The reversal of 16422567779 is 97776522461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16422567779 - 2²⁴ = 16405790563 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16422567379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8211283889 + 8211283890.

It is an arithmetic number, because the mean of its divisors is an integer number (8211283890).

Almost surely, 2^16422567779 is an apocalyptic number.

16422567779 is a deficient number, since it is larger than the sum of its proper divisors (1).

16422567779 is an equidigital number, since it uses as much as digits as its factorization.

16422567779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 56.

The spelling of 16422567779 in words is "sixteen billion, four hundred twenty-two million, five hundred sixty-seven thousand, seven hundred seventy-nine".