20580672097 has 4 divisors (see below), whose sum is σ = 21136906516. Its totient is φ = 20024437680.

The previous prime is 20580672089. The next prime is 20580672103. The reversal of 20580672097 is 79027608502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13121931601 + 7458740496 = 114551^2 + 86364^2 .

It is a cyclic number.

It is not a de Polignac number, because 20580672097 - 2³ = 20580672089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20580672017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278117154 + ... + 278117227.

It is an arithmetic number, because the mean of its divisors is an integer number (5284226629).

Almost surely, 2^20580672097 is an apocalyptic number.

It is an amenable number.

20580672097 is a deficient number, since it is larger than the sum of its proper divisors (556234419).

20580672097 is an equidigital number, since it uses as much as digits as its factorization.

20580672097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556234418.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 20580672097 in words is "twenty billion, five hundred eighty million, six hundred seventy-two thousand, ninety-seven".