20004356657643 has 8 divisors (see below), whose sum is σ = 26686146733056. Its totient is φ = 13329402177000.

The previous prime is 20004356657617. The next prime is 20004356657651. The reversal of 20004356657643 is 34675665340002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20004356657643 - 2¹⁷ = 20004356526571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20004356657653) 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 7 ways as a sum of consecutive naturals, for example, 1708891863 + ... + 1708903568.

It is an arithmetic number, because the mean of its divisors is an integer number (3335768341632).

Almost surely, 2^{20004356657643} is an apocalyptic number.

20004356657643 is a deficient number, since it is larger than the sum of its proper divisors (6681790075413).

20004356657643 is a wasteful number, since it uses less digits than its factorization.

20004356657643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417797385.

The product of its (nonzero) digits is 10886400, while the sum is 51.

The spelling of 20004356657643 in words is "twenty trillion, four billion, three hundred fifty-six million, six hundred fifty-seven thousand, six hundred forty-three".