22002678889 has 27 divisors (see below), whose sum is σ = 23979885111. Its totient is φ = 20185154640.

The previous prime is 22002678883. The next prime is 22002678913. The reversal of 22002678889 is 98887620022.

The square root of 22002678889 is 148333.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19688299225 + 2314379664 = 140315^2 + 48108^2 .

It is not a de Polignac number, because 22002678889 - 2³ = 22002678881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22002678881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 104277994 + ... + 104278204.

It is an arithmetic number, because the mean of its divisors is an integer number (888143893).

Almost surely, 2^22002678889 is an apocalyptic number.

22002678889 is the 148333-rd square number.

22002678889 is the 74167-th centered octagonal number.

It is an amenable number.

22002678889 is a deficient number, since it is larger than the sum of its proper divisors (1977206222).

22002678889 is an frugal number, since it uses more digits than its factorization.

22002678889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 22002678889 in words is "twenty-two billion, two million, six hundred seventy-eight thousand, eight hundred eighty-nine".