22158206786 has 16 divisors (see below), whose sum is σ = 33575093568. Its totient is φ = 10966566000.

The previous prime is 22158206731. The next prime is 22158206821. The reversal of 22158206786 is 68760285122.

It is a super-2 number, since 2×22158206786² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22158206786.

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 7 ways as a sum of consecutive naturals, for example, 917891 + ... + 941721.

It is an arithmetic number, because the mean of its divisors is an integer number (2098443348).

Almost surely, 2^22158206786 is an apocalyptic number.

22158206786 is a deficient number, since it is larger than the sum of its proper divisors (11416886782).

22158206786 is a wasteful number, since it uses less digits than its factorization.

22158206786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28537.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 22158206786 in words is "twenty-two billion, one hundred fifty-eight million, two hundred six thousand, seven hundred eighty-six".