21733000369 has 2 divisors, whose sum is σ = 21733000370. Its totient is φ = 21733000368.

The previous prime is 21733000351. The next prime is 21733000417. The reversal of 21733000369 is 96300033712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19458855025 + 2274145344 = 139495^2 + 47688^2 .

It is a cyclic number.

It is not a de Polignac number, because 21733000369 - 2¹⁹ = 21732476081 is a prime.

It is a super-2 number, since 2×21733000369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21733000169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10866500184 + 10866500185.

It is an arithmetic number, because the mean of its divisors is an integer number (10866500185).

Almost surely, 2^21733000369 is an apocalyptic number.

It is an amenable number.

21733000369 is a deficient number, since it is larger than the sum of its proper divisors (1).

21733000369 is an equidigital number, since it uses as much as digits as its factorization.

21733000369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 34.

The spelling of 21733000369 in words is "twenty-one billion, seven hundred thirty-three million, three hundred sixty-nine", and thus it is an aban number.