20593380173 has 4 divisors (see below), whose sum is σ = 20593879740. Its totient is φ = 20592880608.

The previous prime is 20593380169. The next prime is 20593380193. The reversal of 20593380173 is 37108339502.

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 17483979529 + 3109400644 = 132227^2 + 55762^2 .

It is a cyclic number.

It is not a de Polignac number, because 20593380173 - 2² = 20593380169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20593380173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20593380193) 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, 181778 + ... + 272451.

It is an arithmetic number, because the mean of its divisors is an integer number (5148469935).

Almost surely, 2^20593380173 is an apocalyptic number.

It is an amenable number.

20593380173 is a deficient number, since it is larger than the sum of its proper divisors (499567).

20593380173 is an equidigital number, since it uses as much as digits as its factorization.

20593380173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499566.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 20593380173 in words is "twenty billion, five hundred ninety-three million, three hundred eighty thousand, one hundred seventy-three".