20134112111400 has 384 divisors, whose sum is σ = 73334227380480. Its totient is φ = 4473176555520.

The previous prime is 20134112111381. The next prime is 20134112111461. The reversal of 20134112111400 is 411121143102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 154868824 + ... + 154998776.

It is an arithmetic number, because the mean of its divisors is an integer number (190974550470).

Almost surely, 2^{20134112111400} is an apocalyptic number.

20134112111400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20134112111400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36667113690240).

20134112111400 is an abundant number, since it is smaller than the sum of its proper divisors (53200115269080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20134112111400 is a wasteful number, since it uses less digits than its factorization.

20134112111400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131013 (or 131004 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 20134112111400 its reverse (411121143102), we get a palindrome (20545233254502).

The spelling of 20134112111400 in words is "twenty trillion, one hundred thirty-four billion, one hundred twelve million, one hundred eleven thousand, four hundred".