20801633560445 has 8 divisors (see below), whose sum is σ = 24962059151160. Its totient is φ = 16641240929280.

The previous prime is 20801633560427. The next prime is 20801633560453. The reversal of 20801633560445 is 54406533610802.

It can be written as a sum of positive squares in 4 ways, for example, as 95593509124 + 20706040051321 = 309182^2 + 4550389^2 .

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

It is not a de Polignac number, because 20801633560445 - 2⁶ = 20801633560381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20801633560445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6829460 + ... + 9393869.

It is an arithmetic number, because the mean of its divisors is an integer number (3120257393895).

Almost surely, 2^{20801633560445} is an apocalyptic number.

It is an amenable number.

20801633560445 is a deficient number, since it is larger than the sum of its proper divisors (4160425590715).

20801633560445 is a wasteful number, since it uses less digits than its factorization.

20801633560445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16479775.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 20801633560445 in words is "twenty trillion, eight hundred one billion, six hundred thirty-three million, five hundred sixty thousand, four hundred forty-five".