21134706275 has 12 divisors (see below), whose sum is σ = 27110727600. Its totient is φ = 16324738080.

The previous prime is 21134706251. The next prime is 21134706293. The reversal of 21134706275 is 57260743112.

It is not a de Polignac number, because 21134706275 - 2⁶ = 21134706211 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14574935 + ... + 14576384.

It is an arithmetic number, because the mean of its divisors is an integer number (2259227300).

Almost surely, 2^21134706275 is an apocalyptic number.

21134706275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21134706275 is a deficient number, since it is larger than the sum of its proper divisors (5976021325).

21134706275 is a wasteful number, since it uses less digits than its factorization.

21134706275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29151358 (or 29151353 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 21134706275 in words is "twenty-one billion, one hundred thirty-four million, seven hundred six thousand, two hundred seventy-five".