22419878258 has 18 divisors (see below), whose sum is σ = 33847521519. Its totient is φ = 11137836892.

The previous prime is 22419878251. The next prime is 22419878269. The reversal of 22419878258 is 85287891422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11209939129 + 11209939129 = 105877^2 + 105877^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105877.

It is a super-2 number, since 2×22419878258² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22419878251) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50608985 + ... + 50609427.

Almost surely, 2^22419878258 is an apocalyptic number.

22419878258 is a deficient number, since it is larger than the sum of its proper divisors (11427643261).

22419878258 is an frugal number, since it uses more digits than its factorization.

22419878258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 684 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 56.

The spelling of 22419878258 in words is "twenty-two billion, four hundred nineteen million, eight hundred seventy-eight thousand, two hundred fifty-eight".