20971038497359 has 8 divisors (see below), whose sum is σ = 20984745576960. Its totient is φ = 20957332772376.

The previous prime is 20971038497267. The next prime is 20971038497447. The reversal of 20971038497359 is 95379483017902.

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 20971038497359 - 2⁹ = 20971038496847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20971038497294 and 20971038497303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20971038494359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31616482 + ... + 32272960.

It is an arithmetic number, because the mean of its divisors is an integer number (2623093197120).

Almost surely, 2^{20971038497359} is an apocalyptic number.

20971038497359 is a deficient number, since it is larger than the sum of its proper divisors (13707079601).

20971038497359 is a wasteful number, since it uses less digits than its factorization.

20971038497359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677309.

The product of its (nonzero) digits is 102876480, while the sum is 67.

The spelling of 20971038497359 in words is "twenty trillion, nine hundred seventy-one billion, thirty-eight million, four hundred ninety-seven thousand, three hundred fifty-nine".