21733000417 has 2 divisors, whose sum is σ = 21733000418. Its totient is φ = 21733000416.

The previous prime is 21733000369. The next prime is 21733000453. The reversal of 21733000417 is 71400033712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19386663696 + 2346336721 = 139236^2 + 48439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21733000417 is a prime.

It is not a weakly prime, because it can be changed into another prime (21733000117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10866500208 + 10866500209.

It is an arithmetic number, because the mean of its divisors is an integer number (10866500209).

Almost surely, 2^21733000417 is an apocalyptic number.

It is an amenable number.

21733000417 is a deficient number, since it is larger than the sum of its proper divisors (1).

21733000417 is an equidigital number, since it uses as much as digits as its factorization.

21733000417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The spelling of 21733000417 in words is "twenty-one billion, seven hundred thirty-three million, four hundred seventeen", and thus it is an aban number.