20004356657574 has 24 divisors (see below), whose sum is σ = 43343274691080. Its totient is φ = 6668041665408.

The previous prime is 20004356657573. The next prime is 20004356657617. The reversal of 20004356657574 is 47575665340002.

20004356657574 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 4 + 3 + 5 + 6 + 65 + 7 + 574 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20004356657574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004356657573) 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, 4826667 + ... + 7956470.

It is an arithmetic number, because the mean of its divisors is an integer number (1805969778795).

Almost surely, 2^{20004356657574} is an apocalyptic number.

20004356657574 is an abundant number, since it is smaller than the sum of its proper divisors (23338918033506).

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

20004356657574 is a wasteful number, since it uses less digits than its factorization.

20004356657574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12870084 (or 12870081 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 54.

The spelling of 20004356657574 in words is "twenty trillion, four billion, three hundred fifty-six million, six hundred fifty-seven thousand, five hundred seventy-four".