20005403383857 has 8 divisors (see below), whose sum is σ = 26932840801984. Its totient is φ = 13207450777488.

The previous prime is 20005403383787. The next prime is 20005403383897. The reversal of 20005403383857 is 75838330450002.

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

It is not a de Polignac number, because 20005403383857 - 2³² = 20001108416561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20005403383897) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32371202578 + ... + 32371203195.

It is an arithmetic number, because the mean of its divisors is an integer number (3366605100248).

Almost surely, 2^{20005403383857} is an apocalyptic number.

It is an amenable number.

20005403383857 is a deficient number, since it is larger than the sum of its proper divisors (6927437418127).

20005403383857 is a wasteful number, since it uses less digits than its factorization.

20005403383857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64742405879.

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 20005403383857 in words is "twenty trillion, five billion, four hundred three million, three hundred eighty-three thousand, eight hundred fifty-seven".