21134541434 has 8 divisors (see below), whose sum is σ = 33370328640. Its totient is φ = 10011098556.

The previous prime is 21134541433. The next prime is 21134541481. The reversal of 21134541434 is 43414543112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21134541434.

It is not an unprimeable number, because it can be changed into a prime (21134541433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278086034 + ... + 278086109.

It is an arithmetic number, because the mean of its divisors is an integer number (4171291080).

Almost surely, 2^21134541434 is an apocalyptic number.

21134541434 is a deficient number, since it is larger than the sum of its proper divisors (12235787206).

21134541434 is a wasteful number, since it uses less digits than its factorization.

21134541434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556172164.

The product of its digits is 23040, while the sum is 32.

The spelling of 21134541434 in words is "twenty-one billion, one hundred thirty-four million, five hundred forty-one thousand, four hundred thirty-four".