20326943178 has 24 divisors (see below), whose sum is σ = 44045217216. Its totient is φ = 6775108200.

The previous prime is 20326943177. The next prime is 20326943207. The reversal of 20326943178 is 87134962302.

20326943178 is a `hidden beast` number, since 2 + 0 + 326 + 9 + 4 + 317 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (20326943173) by changing a digit.

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, 234223 + ... + 309053.

It is an arithmetic number, because the mean of its divisors is an integer number (1835217384).

Almost surely, 2^20326943178 is an apocalyptic number.

20326943178 is an abundant number, since it is smaller than the sum of its proper divisors (23718274038).

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

20326943178 is a wasteful number, since it uses less digits than its factorization.

20326943178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89930 (or 89927 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 20326943178 in words is "twenty billion, three hundred twenty-six million, nine hundred forty-three thousand, one hundred seventy-eight".