22178457842 has 8 divisors (see below), whose sum is σ = 33287768796. Its totient is φ = 11082534912.

The previous prime is 22178457817. The next prime is 22178457859. The reversal of 22178457842 is 24875487122.

It can be written as a sum of positive squares in 2 ways, for example, as 22052547001 + 125910841 = 148501^2 + 11221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 3342863 + ... + 3349490.

Almost surely, 2^22178457842 is an apocalyptic number.

22178457842 is a deficient number, since it is larger than the sum of its proper divisors (11109310954).

22178457842 is a wasteful number, since it uses less digits than its factorization.

22178457842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6694012.

The product of its digits is 2007040, while the sum is 50.

The spelling of 22178457842 in words is "twenty-two billion, one hundred seventy-eight million, four hundred fifty-seven thousand, eight hundred forty-two".