20720758407443 has 8 divisors (see below), whose sum is σ = 20743020561120. Its totient is φ = 20698505942400.

The previous prime is 20720758407409. The next prime is 20720758407509. The reversal of 20720758407443 is 34470485702702.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20720758407443 - 2¹⁰ = 20720758406419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20720758407343) 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, 1861538 + ... + 6701256.

It is an arithmetic number, because the mean of its divisors is an integer number (2592877570140).

Almost surely, 2^{20720758407443} is an apocalyptic number.

20720758407443 is a deficient number, since it is larger than the sum of its proper divisors (22262153677).

20720758407443 is a wasteful number, since it uses less digits than its factorization.

20720758407443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844317.

The product of its (nonzero) digits is 10536960, while the sum is 53.

The spelling of 20720758407443 in words is "twenty trillion, seven hundred twenty billion, seven hundred fifty-eight million, four hundred seven thousand, four hundred forty-three".