20382342641891 has 16 divisors (see below), whose sum is σ = 22388826858240. Its totient is φ = 18469298786400.

The previous prime is 20382342641863. The next prime is 20382342641897. The reversal of 20382342641891 is 19814624328302.

It is a cyclic number.

It is not a de Polignac number, because 20382342641891 - 2¹⁴ = 20382342625507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20382342641897) 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, 10107341 + ... + 11955041.

It is an arithmetic number, because the mean of its divisors is an integer number (1399301678640).

Almost surely, 2^{20382342641891} is an apocalyptic number.

20382342641891 is a deficient number, since it is larger than the sum of its proper divisors (2006484216349).

20382342641891 is a wasteful number, since it uses less digits than its factorization.

20382342641891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872986.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 20382342641891 in words is "twenty trillion, three hundred eighty-two billion, three hundred forty-two million, six hundred forty-one thousand, eight hundred ninety-one".