20997550080001 has 8 divisors (see below), whose sum is σ = 22906488154464. Its totient is φ = 19088623653120.

The previous prime is 20997550079963. The next prime is 20997550080037. The reversal of 20997550080001 is 10008005579902.

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 20997550080001 - 2²³ = 20997541691393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20997550080401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097505 + ... + 6572641.

It is an arithmetic number, because the mean of its divisors is an integer number (2863311019308).

Almost surely, 2^{20997550080001} is an apocalyptic number.

It is an amenable number.

20997550080001 is a deficient number, since it is larger than the sum of its proper divisors (1908938074463).

20997550080001 is a wasteful number, since it uses less digits than its factorization.

20997550080001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5823791.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 20997550080001 in words is "twenty trillion, nine hundred ninety-seven billion, five hundred fifty million, eighty thousand, one".