22533065505991 has 2 divisors, whose sum is σ = 22533065505992. Its totient is φ = 22533065505990.

The previous prime is 22533065505941. The next prime is 22533065505997. The reversal of 22533065505991 is 19950556033522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22533065505991 - 2¹⁵ = 22533065473223 is a prime.

It is a super-3 number, since 3×22533065505991³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22533065505997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11266532752995 + 11266532752996.

It is an arithmetic number, because the mean of its divisors is an integer number (11266532752996).

Almost surely, 2^{22533065505991} is an apocalyptic number.

22533065505991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22533065505991 is an equidigital number, since it uses as much as digits as its factorization.

22533065505991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10935000, while the sum is 55.

The spelling of 22533065505991 in words is "twenty-two trillion, five hundred thirty-three billion, sixty-five million, five hundred five thousand, nine hundred ninety-one".