20384737672859 has 8 divisors (see below), whose sum is σ = 23303582117088. Its totient is φ = 17467577994240.

The previous prime is 20384737672853. The next prime is 20384737672883. The reversal of 20384737672859 is 95827673748302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20384737672859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20384737672792 and 20384737672801.

It is not an unprimeable number, because it can be changed into a prime (20384737672853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421165472 + ... + 421213869.

It is an arithmetic number, because the mean of its divisors is an integer number (2912947764636).

Almost surely, 2^{20384737672859} is an apocalyptic number.

20384737672859 is a deficient number, since it is larger than the sum of its proper divisors (2918844444229).

20384737672859 is an equidigital number, since it uses as much as digits as its factorization.

20384737672859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842382805.

The product of its (nonzero) digits is 853493760, while the sum is 71.

The spelling of 20384737672859 in words is "twenty trillion, three hundred eighty-four billion, seven hundred thirty-seven million, six hundred seventy-two thousand, eight hundred fifty-nine".