22047375078 has 48 divisors (see below), whose sum is σ = 50447517120. Its totient is φ = 6939617328.

The previous prime is 22047375071. The next prime is 22047375083. The reversal of 22047375078 is 87057374022.

22047375078 is a `hidden beast` number, since 2 + 204 + 7 + 375 + 0 + 78 = 666.

22047375078 is a nontrivial binomial coefficient, being equal to C(209988, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22047375071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1 + ... + 209987.

It is an arithmetic number, because the mean of its divisors is an integer number (1050989940).

Almost surely, 2^22047375078 is an apocalyptic number.

22047375078 is the 209987-th triangular number and also the 104994-th hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22047375078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25223758560).

22047375078 is an abundant number, since it is smaller than the sum of its proper divisors (28400142042).

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

22047375078 is a wasteful number, since it uses less digits than its factorization.

22047375078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210321 (or 210318 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The spelling of 22047375078 in words is "twenty-two billion, forty-seven million, three hundred seventy-five thousand, seventy-eight".