21740273327 has 2 divisors, whose sum is σ = 21740273328. Its totient is φ = 21740273326.

The previous prime is 21740273281. The next prime is 21740273351. The reversal of 21740273327 is 72337204712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21740273327 - 2²⁴ = 21723496111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21740273377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10870136663 + 10870136664.

It is an arithmetic number, because the mean of its divisors is an integer number (10870136664).

Almost surely, 2^21740273327 is an apocalyptic number.

21740273327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21740273327 is an equidigital number, since it uses as much as digits as its factorization.

21740273327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 21740273327 in words is "twenty-one billion, seven hundred forty million, two hundred seventy-three thousand, three hundred twenty-seven".