20433759808709 has 8 divisors (see below), whose sum is σ = 22005624947712. Its totient is φ = 18861900021360.

The previous prime is 20433759808699. The next prime is 20433759808723. The reversal of 20433759808709 is 90780895733402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20433759808709 is a prime.

It is a super-2 number, since 2×20433759808709² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433759808409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10418204 + ... + 12223194.

It is an arithmetic number, because the mean of its divisors is an integer number (2750703118464).

Almost surely, 2^{20433759808709} is an apocalyptic number.

It is an amenable number.

20433759808709 is a deficient number, since it is larger than the sum of its proper divisors (1571865139003).

20433759808709 is a wasteful number, since it uses less digits than its factorization.

20433759808709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675827.

The product of its (nonzero) digits is 91445760, while the sum is 65.

The spelling of 20433759808709 in words is "twenty trillion, four hundred thirty-three billion, seven hundred fifty-nine million, eight hundred eight thousand, seven hundred nine".