21795267341 has 2 divisors, whose sum is σ = 21795267342. Its totient is φ = 21795267340.

The previous prime is 21795267313. The next prime is 21795267343. The reversal of 21795267341 is 14376259712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21775429225 + 19838116 = 147565^2 + 4454^2 .

It is a cyclic number.

It is not a de Polignac number, because 21795267341 - 2¹⁴ = 21795250957 is a prime.

It is a super-2 number, since 2×21795267341² (a number of 21 digits) contains 22 as substring.

Together with 21795267343, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21795267343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10897633670 + 10897633671.

It is an arithmetic number, because the mean of its divisors is an integer number (10897633671).

Almost surely, 2^21795267341 is an apocalyptic number.

It is an amenable number.

21795267341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21795267341 is an equidigital number, since it uses as much as digits as its factorization.

21795267341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 47.

The spelling of 21795267341 in words is "twenty-one billion, seven hundred ninety-five million, two hundred sixty-seven thousand, three hundred forty-one".