22639443078 has 16 divisors (see below), whose sum is σ = 51747298560. Its totient is φ = 6468412296.

The previous prime is 22639443077. The next prime is 22639443083. The reversal of 22639443078 is 87034493622.

It is a super-2 number, since 2×22639443078² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22639443077) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 269517138 + ... + 269517221.

It is an arithmetic number, because the mean of its divisors is an integer number (3234206160).

Almost surely, 2^22639443078 is an apocalyptic number.

22639443078 is an abundant number, since it is smaller than the sum of its proper divisors (29107855482).

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

22639443078 is a wasteful number, since it uses less digits than its factorization.

22639443078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539034371.

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 22639443078 in words is "twenty-two billion, six hundred thirty-nine million, four hundred forty-three thousand, seventy-eight".