21933437359 has 2 divisors, whose sum is σ = 21933437360. Its totient is φ = 21933437358.

The previous prime is 21933437299. The next prime is 21933437369. The reversal of 21933437359 is 95373433912.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21933437359 - 2¹⁷ = 21933306287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21933437369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10966718679 + 10966718680.

It is an arithmetic number, because the mean of its divisors is an integer number (10966718680).

Almost surely, 2^21933437359 is an apocalyptic number.

21933437359 is a deficient number, since it is larger than the sum of its proper divisors (1).

21933437359 is an equidigital number, since it uses as much as digits as its factorization.

21933437359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 49.

The spelling of 21933437359 in words is "twenty-one billion, nine hundred thirty-three million, four hundred thirty-seven thousand, three hundred fifty-nine".