21733073417729 has 4 divisors (see below), whose sum is σ = 21733357694400. Its totient is φ = 21732789141060.

The previous prime is 21733073417639. The next prime is 21733073417743. The reversal of 21733073417729 is 92771437033712.

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 21733073417729 - 2¹² = 21733073413633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21733073417329) 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, 142023629 + ... + 142176570.

It is an arithmetic number, because the mean of its divisors is an integer number (5433339423600).

Almost surely, 2^{21733073417729} is an apocalyptic number.

It is an amenable number.

21733073417729 is a deficient number, since it is larger than the sum of its proper divisors (284276671).

21733073417729 is an equidigital number, since it uses as much as digits as its factorization.

21733073417729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284276670.

The product of its (nonzero) digits is 9335088, while the sum is 56.

The spelling of 21733073417729 in words is "twenty-one trillion, seven hundred thirty-three billion, seventy-three million, four hundred seventeen thousand, seven hundred twenty-nine".