20134112111345 has 32 divisors (see below), whose sum is σ = 24427914481152. Its totient is φ = 15929733860352.

The previous prime is 20134112111341. The next prime is 20134112111357. The reversal of 20134112111345 is 54311121143102.

It is a cyclic number.

It is not a de Polignac number, because 20134112111345 - 2² = 20134112111341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134112111341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1290061532 + ... + 1290077138.

It is an arithmetic number, because the mean of its divisors is an integer number (763372327536).

Almost surely, 2^{20134112111345} is an apocalyptic number.

It is an amenable number.

20134112111345 is a deficient number, since it is larger than the sum of its proper divisors (4293802369807).

20134112111345 is a wasteful number, since it uses less digits than its factorization.

20134112111345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18881.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 20134112111345 its reverse (54311121143102), we get a palindrome (74445233254447).

The spelling of 20134112111345 in words is "twenty trillion, one hundred thirty-four billion, one hundred twelve million, one hundred eleven thousand, three hundred forty-five".