20111120673 has 16 divisors (see below), whose sum is σ = 31977931776. Its totient is φ = 10992413520.

The previous prime is 20111120669. The next prime is 20111120681. The reversal of 20111120673 is 37602111102.

It is not a de Polignac number, because 20111120673 - 2² = 20111120669 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111120273) 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, 20818483 + ... + 20819448.

It is an arithmetic number, because the mean of its divisors is an integer number (1998620736).

Almost surely, 2^20111120673 is an apocalyptic number.

20111120673 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20111120673 is a deficient number, since it is larger than the sum of its proper divisors (11866811103).

20111120673 is a wasteful number, since it uses less digits than its factorization.

20111120673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41637964.

The product of its (nonzero) digits is 504, while the sum is 24.

Adding to 20111120673 its reverse (37602111102), we get a palindrome (57713231775).

The spelling of 20111120673 in words is "twenty billion, one hundred eleven million, one hundred twenty thousand, six hundred seventy-three".