20803091101 has 8 divisors (see below), whose sum is σ = 23175857880. Its totient is φ = 18540685632.

The previous prime is 20803091047. The next prime is 20803091119. The reversal of 20803091101 is 10119030802.

It can be written as a sum of positive squares in 4 ways, for example, as 156275001 + 20646816100 = 12501^2 + 143690^2 .

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 20803091101 - 2²³ = 20794702493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20803097101) 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, 27589930 + ... + 27590683.

It is an arithmetic number, because the mean of its divisors is an integer number (2896982235).

Almost surely, 2^20803091101 is an apocalyptic number.

It is an amenable number.

20803091101 is a deficient number, since it is larger than the sum of its proper divisors (2372766779).

20803091101 is a wasteful number, since it uses less digits than its factorization.

20803091101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55180655.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 20803091101 in words is "twenty billion, eight hundred three million, ninety-one thousand, one hundred one".