22456667819 has 2 divisors, whose sum is σ = 22456667820. Its totient is φ = 22456667818.

The previous prime is 22456667801. The next prime is 22456667839. The reversal of 22456667819 is 91876665422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22456667819 is a prime.

It is a super-2 number, since 2×22456667819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22456667839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11228333909 + 11228333910.

It is an arithmetic number, because the mean of its divisors is an integer number (11228333910).

Almost surely, 2^22456667819 is an apocalyptic number.

22456667819 is a deficient number, since it is larger than the sum of its proper divisors (1).

22456667819 is an equidigital number, since it uses as much as digits as its factorization.

22456667819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 56.

The spelling of 22456667819 in words is "twenty-two billion, four hundred fifty-six million, six hundred sixty-seven thousand, eight hundred nineteen".