20786345873 has 16 divisors (see below), whose sum is σ = 21350520000. Its totient is φ = 20230153152.

The previous prime is 20786345837. The next prime is 20786345891. The reversal of 20786345873 is 37854368702.

It is a cyclic number.

It is not a de Polignac number, because 20786345873 - 2¹⁰ = 20786344849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20786305873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2783018 + ... + 2790476.

It is an arithmetic number, because the mean of its divisors is an integer number (1334407500).

Almost surely, 2^20786345873 is an apocalyptic number.

It is an amenable number.

20786345873 is a deficient number, since it is larger than the sum of its proper divisors (564174127).

20786345873 is a wasteful number, since it uses less digits than its factorization.

20786345873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7984.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 20786345873 in words is "twenty billion, seven hundred eighty-six million, three hundred forty-five thousand, eight hundred seventy-three".