20504000111 has 8 divisors (see below), whose sum is σ = 23590413600. Its totient is φ = 17456904288.

The previous prime is 20504000093. The next prime is 20504000113. The reversal of 20504000111 is 11100040502.

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 20504000111 - 2¹⁴ = 20503983727 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 (20504000113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9828296 + ... + 9830381.

It is an arithmetic number, because the mean of its divisors is an integer number (2948801700).

Almost surely, 2^20504000111 is an apocalyptic number.

20504000111 is a deficient number, since it is larger than the sum of its proper divisors (3086413489).

20504000111 is a wasteful number, since it uses less digits than its factorization.

20504000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19658833.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 20504000111 its reverse (11100040502), we get a palindrome (31604040613).

The spelling of 20504000111 in words is "twenty billion, five hundred four million, one hundred eleven", and thus it is an aban number.