20338837806 has 32 divisors (see below), whose sum is σ = 46581984000. Its totient is φ = 5799445056.

The previous prime is 20338837787. The next prime is 20338837807. The reversal of 20338837806 is 60873883302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20338837807) 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, 464271 + ... + 506186.

It is an arithmetic number, because the mean of its divisors is an integer number (1455687000).

Almost surely, 2^20338837806 is an apocalyptic number.

20338837806 is an abundant number, since it is smaller than the sum of its proper divisors (26243146194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20338837806 is a wasteful number, since it uses less digits than its factorization.

20338837806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970968.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 20338837806 in words is "twenty billion, three hundred thirty-eight million, eight hundred thirty-seven thousand, eight hundred six".