21794418051023 has 2 divisors, whose sum is σ = 21794418051024. Its totient is φ = 21794418051022.

The previous prime is 21794418050987. The next prime is 21794418051071. The reversal of 21794418051023 is 32015081449712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21794418051023 - 2²⁰ = 21794417002447 is a prime.

It is a super-3 number, since 3×21794418051023³ (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 (21794418051323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10897209025511 + 10897209025512.

It is an arithmetic number, because the mean of its divisors is an integer number (10897209025512).

Almost surely, 2^{21794418051023} is an apocalyptic number.

21794418051023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21794418051023 is an equidigital number, since it uses as much as digits as its factorization.

21794418051023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 21794418051023 in words is "twenty-one trillion, seven hundred ninety-four billion, four hundred eighteen million, fifty-one thousand, twenty-three".