21383682767 has 2 divisors, whose sum is σ = 21383682768. Its totient is φ = 21383682766.

The previous prime is 21383682709. The next prime is 21383682869. The reversal of 21383682767 is 76728638312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21383682767 - 2⁸ = 21383682511 is a prime.

It is a super-3 number, since 3×21383682767³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21383685767) 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 as a sum of consecutive naturals, namely, 10691841383 + 10691841384.

It is an arithmetic number, because the mean of its divisors is an integer number (10691841384).

Almost surely, 2^21383682767 is an apocalyptic number.

21383682767 is a deficient number, since it is larger than the sum of its proper divisors (1).

21383682767 is an equidigital number, since it uses as much as digits as its factorization.

21383682767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 53.

The spelling of 21383682767 in words is "twenty-one billion, three hundred eighty-three million, six hundred eighty-two thousand, seven hundred sixty-seven".