22638151338 has 32 divisors (see below), whose sum is σ = 49589148672. Its totient is φ = 6832710000.

The previous prime is 22638151321. The next prime is 22638151363. The reversal of 22638151338 is 83315183622.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22638151338.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 666706 + ... + 699837.

It is an arithmetic number, because the mean of its divisors is an integer number (1549660896).

Almost surely, 2^22638151338 is an apocalyptic number.

22638151338 is an abundant number, since it is smaller than the sum of its proper divisors (26950997334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22638151338 is a wasteful number, since it uses less digits than its factorization.

22638151338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366810.

The product of its digits is 207360, while the sum is 42.

The spelling of 22638151338 in words is "twenty-two billion, six hundred thirty-eight million, one hundred fifty-one thousand, three hundred thirty-eight".