21730814494033 has 4 divisors (see below), whose sum is σ = 22236182273008. Its totient is φ = 21225446715060.

The previous prime is 21730814494031. The next prime is 21730814494043. The reversal of 21730814494033 is 33049441803712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21730814494033 - 2¹ = 21730814494031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21730814494031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252683889423 + ... + 252683889508.

It is an arithmetic number, because the mean of its divisors is an integer number (5559045568252).

Almost surely, 2^{21730814494033} is an apocalyptic number.

It is an amenable number.

21730814494033 is a deficient number, since it is larger than the sum of its proper divisors (505367778975).

21730814494033 is an equidigital number, since it uses as much as digits as its factorization.

21730814494033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505367778974.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 21730814494033 in words is "twenty-one trillion, seven hundred thirty billion, eight hundred fourteen million, four hundred ninety-four thousand, thirty-three".