22155879694752 has 72 divisors (see below), whose sum is σ = 63583817677380. Its totient is φ = 7317538237440.

The previous prime is 22155879694727. The next prime is 22155879694769. The reversal of 22155879694752 is 25749697855122.

It is a happy number.

22155879694752 is a `hidden beast` number, since 2 + 2 + 1 + 558 + 7 + 9 + 69 + 4 + 7 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19750167021456 + 2405712673296 = 4444116^2 + 1551036^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (72).

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 11 ways as a sum of consecutive naturals, for example, 352859149 + ... + 352921932.

Almost surely, 2^{22155879694752} is an apocalyptic number.

It is an amenable number.

22155879694752 is an abundant number, since it is smaller than the sum of its proper divisors (41427937982628).

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

22155879694752 is a wasteful number, since it uses less digits than its factorization.

22155879694752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705781206 (or 705781195 counting only the distinct ones).

The product of its digits is 762048000, while the sum is 72.

The spelling of 22155879694752 in words is "twenty-two trillion, one hundred fifty-five billion, eight hundred seventy-nine million, six hundred ninety-four thousand, seven hundred fifty-two".