20380396111 has 4 divisors (see below), whose sum is σ = 20380852800. Its totient is φ = 20379939424.

The previous prime is 20380396081. The next prime is 20380396121. The reversal of 20380396111 is 11169308302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11169308302 = 2 ⋅5584654151.

It is a cyclic number.

It is not a de Polignac number, because 20380396111 - 2¹¹ = 20380394063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380396121) 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, 153151 + ... + 253408.

It is an arithmetic number, because the mean of its divisors is an integer number (5095213200).

Almost surely, 2^20380396111 is an apocalyptic number.

20380396111 is a deficient number, since it is larger than the sum of its proper divisors (456689).

20380396111 is an equidigital number, since it uses as much as digits as its factorization.

20380396111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456688.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 20380396111 in words is "twenty billion, three hundred eighty million, three hundred ninety-six thousand, one hundred eleven".