20330237716805 has 4 divisors (see below), whose sum is σ = 24396285260172. Its totient is φ = 16264190173440.

The previous prime is 20330237716801. The next prime is 20330237716813. The reversal of 20330237716805 is 50861773203302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11206539578689 + 9123698138116 = 3347617^2 + 3020546^2 .

It is not a de Polignac number, because 20330237716805 - 2² = 20330237716801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20330237716805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330237716801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033023771676 + ... + 2033023771685.

It is an arithmetic number, because the mean of its divisors is an integer number (6099071315043).

Almost surely, 2^{20330237716805} is an apocalyptic number.

It is an amenable number.

20330237716805 is a deficient number, since it is larger than the sum of its proper divisors (4066047543367).

20330237716805 is an equidigital number, since it uses as much as digits as its factorization.

20330237716805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066047543366.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 20330237716805 in words is "twenty trillion, three hundred thirty billion, two hundred thirty-seven million, seven hundred sixteen thousand, eight hundred five".