20134143405 has 32 divisors (see below), whose sum is σ = 35802913920. Its totient is φ = 10735545600.

The previous prime is 20134143391. The next prime is 20134143413. The reversal of 20134143405 is 50434143102.

It is a happy number.

20134143405 is a `hidden beast` number, since 201 + 3 + 414 + 3 + 40 + 5 = 666.

It is not a de Polignac number, because 20134143405 - 2⁵ = 20134143373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 605205 + ... + 637605.

It is an arithmetic number, because the mean of its divisors is an integer number (1118841060).

Almost surely, 2^20134143405 is an apocalyptic number.

It is an amenable number.

20134143405 is a deficient number, since it is larger than the sum of its proper divisors (15668770515).

20134143405 is a wasteful number, since it uses less digits than its factorization.

20134143405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37018 (or 37012 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20134143405 its reverse (50434143102), we get a palindrome (70568286507).

The spelling of 20134143405 in words is "twenty billion, one hundred thirty-four million, one hundred forty-three thousand, four hundred five".