21827053741 has 2 divisors, whose sum is σ = 21827053742. Its totient is φ = 21827053740.

The previous prime is 21827053739. The next prime is 21827053747. The reversal of 21827053741 is 14735072812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20229372900 + 1597680841 = 142230^2 + 39971^2 .

It is a cyclic number.

It is not a de Polignac number, because 21827053741 - 2¹ = 21827053739 is a prime.

Together with 21827053739, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21827053694 and 21827053703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21827053747) 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, 10913526870 + 10913526871.

It is an arithmetic number, because the mean of its divisors is an integer number (10913526871).

Almost surely, 2^21827053741 is an apocalyptic number.

It is an amenable number.

21827053741 is a deficient number, since it is larger than the sum of its proper divisors (1).

21827053741 is an equidigital number, since it uses as much as digits as its factorization.

21827053741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 21827053741 in words is "twenty-one billion, eight hundred twenty-seven million, fifty-three thousand, seven hundred forty-one".