20178368426 has 32 divisors (see below), whose sum is σ = 31745850048. Its totient is φ = 9611078400.

The previous prime is 20178368417. The next prime is 20178368443. The reversal of 20178368426 is 62486387102.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564626 + ... + 599298.

It is an arithmetic number, because the mean of its divisors is an integer number (992057814).

Almost surely, 2^20178368426 is an apocalyptic number.

20178368426 is a deficient number, since it is larger than the sum of its proper divisors (11567481622).

20178368426 is a wasteful number, since it uses less digits than its factorization.

20178368426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34886.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 20178368426 in words is "twenty billion, one hundred seventy-eight million, three hundred sixty-eight thousand, four hundred twenty-six".