20437082860871 has 4 divisors (see below), whose sum is σ = 20935548296544. Its totient is φ = 19938617425200.

The previous prime is 20437082860847. The next prime is 20437082860891. The reversal of 20437082860871 is 17806828073402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20437082860871 - 2¹⁰ = 20437082859847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20437082860891) 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 3 ways as a sum of consecutive naturals, for example, 249232717775 + ... + 249232717856.

It is an arithmetic number, because the mean of its divisors is an integer number (5233887074136).

Almost surely, 2^{20437082860871} is an apocalyptic number.

20437082860871 is a deficient number, since it is larger than the sum of its proper divisors (498465435673).

20437082860871 is an equidigital number, since it uses as much as digits as its factorization.

20437082860871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498465435672.

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 20437082860871 in words is "twenty trillion, four hundred thirty-seven billion, eighty-two million, eight hundred sixty thousand, eight hundred seventy-one".