22078989522 has 18 divisors (see below), whose sum is σ = 47839176567. Its totient is φ = 7359453036.

The previous prime is 22078989487. The next prime is 22078989593. The reversal of 22078989522 is 22598987022.

22078989522 is a `hidden beast` number, since 2 + 20 + 7 + 8 + 98 + 9 + 522 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11039494761 + 11039494761 = 105069^2 + 105069^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105069.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 612903 + ... + 647925.

Almost surely, 2^22078989522 is an apocalyptic number.

22078989522 is an abundant number, since it is smaller than the sum of its proper divisors (25760187045).

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

22078989522 is an frugal number, since it uses more digits than its factorization.

22078989522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70054 (or 35028 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 22078989522 in words is "twenty-two billion, seventy-eight million, nine hundred eighty-nine thousand, five hundred twenty-two".