21842364601 has 2 divisors, whose sum is σ = 21842364602. Its totient is φ = 21842364600.

The previous prime is 21842364587. The next prime is 21842364613. The reversal of 21842364601 is 10646324812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21513848976 + 328515625 = 146676^2 + 18125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21842364601 is a prime.

It is not a weakly prime, because it can be changed into another prime (21842364671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10921182300 + 10921182301.

It is an arithmetic number, because the mean of its divisors is an integer number (10921182301).

Almost surely, 2^21842364601 is an apocalyptic number.

It is an amenable number.

21842364601 is a deficient number, since it is larger than the sum of its proper divisors (1).

21842364601 is an equidigital number, since it uses as much as digits as its factorization.

21842364601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

It can be divided in two parts, 218423 and 64601, that added together give a square (283024 = 532²).

The spelling of 21842364601 in words is "twenty-one billion, eight hundred forty-two million, three hundred sixty-four thousand, six hundred one".