20642055173334 has 96 divisors (see below), whose sum is σ = 51202138478400. Its totient is φ = 5887529856000.

The previous prime is 20642055173287. The next prime is 20642055173371. The reversal of 20642055173334 is 43337155024602.

It is a happy number.

20642055173334 is a `hidden beast` number, since 2 + 0 + 6 + 4 + 20 + 551 + 73 + 3 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20642055173334.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171898354 + ... + 172018394.

It is an arithmetic number, because the mean of its divisors is an integer number (533355609150).

Almost surely, 2^{20642055173334} is an apocalyptic number.

20642055173334 is an abundant number, since it is smaller than the sum of its proper divisors (30560083305066).

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

20642055173334 is a wasteful number, since it uses less digits than its factorization.

20642055173334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122406 (or 122403 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

The spelling of 20642055173334 in words is "twenty trillion, six hundred forty-two billion, fifty-five million, one hundred seventy-three thousand, three hundred thirty-four".