21275176343 has 8 divisors (see below), whose sum is σ = 21427908480. Its totient is φ = 21122896480.

The previous prime is 21275176339. The next prime is 21275176393. The reversal of 21275176343 is 34367157212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21275176343 - 2² = 21275176339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21275176343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21275176393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18368 + ... + 207093.

It is an arithmetic number, because the mean of its divisors is an integer number (2678488560).

Almost surely, 2^21275176343 is an apocalyptic number.

21275176343 is a deficient number, since it is larger than the sum of its proper divisors (152732137).

21275176343 is a wasteful number, since it uses less digits than its factorization.

21275176343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226137.

The product of its digits is 211680, while the sum is 41.

The spelling of 21275176343 in words is "twenty-one billion, two hundred seventy-five million, one hundred seventy-six thousand, three hundred forty-three".