21314134575 has 72 divisors (see below), whose sum is σ = 39075499008. Its totient is φ = 11100786240.

The previous prime is 21314134561. The next prime is 21314134579. The reversal of 21314134575 is 57543141312.

21314134575 is a `hidden beast` number, since 2 + 13 + 1 + 41 + 34 + 575 = 666.

It is not a de Polignac number, because 21314134575 - 2⁷ = 21314134447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314134579) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5317222 + ... + 5321228.

It is an arithmetic number, because the mean of its divisors is an integer number (542715264).

Almost surely, 2^21314134575 is an apocalyptic number.

21314134575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21314134575 is a deficient number, since it is larger than the sum of its proper divisors (17761364433).

21314134575 is a wasteful number, since it uses less digits than its factorization.

21314134575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573 (or 4565 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

Adding to 21314134575 its reverse (57543141312), we get a palindrome (78857275887).

The spelling of 21314134575 in words is "twenty-one billion, three hundred fourteen million, one hundred thirty-four thousand, five hundred seventy-five".