20780427111179 has 8 divisors (see below), whose sum is σ = 21346051887888. Its totient is φ = 20215012419360.

The previous prime is 20780427111173. The next prime is 20780427111289. The reversal of 20780427111179 is 97111172408702.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20780427111179 - 2⁴ = 20780427111163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20780427111173) 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, 52320692 + ... + 52716369.

It is an arithmetic number, because the mean of its divisors is an integer number (2668256485986).

Almost surely, 2^{20780427111179} is an apocalyptic number.

20780427111179 is a deficient number, since it is larger than the sum of its proper divisors (565624776709).

20780427111179 is a wasteful number, since it uses less digits than its factorization.

20780427111179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105042445.

The product of its (nonzero) digits is 395136, while the sum is 50.

The spelling of 20780427111179 in words is "twenty trillion, seven hundred eighty billion, four hundred twenty-seven million, one hundred eleven thousand, one hundred seventy-nine".