22493877778 has 16 divisors (see below), whose sum is σ = 35440983936. Its totient is φ = 10686693600.

The previous prime is 22493877733. The next prime is 22493877781. The reversal of 22493877778 is 87777839422.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612251 + ... + 1626142.

It is an arithmetic number, because the mean of its divisors is an integer number (2215061496).

Almost surely, 2^22493877778 is an apocalyptic number.

22493877778 is a deficient number, since it is larger than the sum of its proper divisors (12947106158).

22493877778 is a wasteful number, since it uses less digits than its factorization.

22493877778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238569.

The product of its digits is 66382848, while the sum is 64.

The spelling of 22493877778 in words is "twenty-two billion, four hundred ninety-three million, eight hundred seventy-seven thousand, seven hundred seventy-eight".