20104235542278 has 24 divisors (see below), whose sum is σ = 43749391764000. Its totient is φ = 6672148038864.

The previous prime is 20104235542277. The next prime is 20104235542319. The reversal of 20104235542278 is 87224553240102.

20104235542278 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 4 + 2 + 3 + 554 + 22 + 78 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104235542271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2438646478 + ... + 2438654721.

It is an arithmetic number, because the mean of its divisors is an integer number (1822891323500).

Almost surely, 2^{20104235542278} is an apocalyptic number.

20104235542278 is an abundant number, since it is smaller than the sum of its proper divisors (23645156221722).

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

20104235542278 is a wasteful number, since it uses less digits than its factorization.

20104235542278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4877301436 (or 4877301433 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 20104235542278 in words is "twenty trillion, one hundred four billion, two hundred thirty-five million, five hundred forty-two thousand, two hundred seventy-eight".