204706713791 has 4 divisors (see below), whose sum is σ = 204767878392. Its totient is φ = 204645549192.

The previous prime is 204706713779. The next prime is 204706713853. The reversal of 204706713791 is 197317607402.

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

It is a cyclic number.

It is not a de Polignac number, because 204706713791 - 2⁶ = 204706713727 is a prime.

It is a super-2 number, since 2×204706713791² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204706613791) 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, 30577280 + ... + 30583973.

It is an arithmetic number, because the mean of its divisors is an integer number (51191969598).

Almost surely, 2^204706713791 is an apocalyptic number.

204706713791 is a deficient number, since it is larger than the sum of its proper divisors (61164601).

204706713791 is an equidigital number, since it uses as much as digits as its factorization.

204706713791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61164600.

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 204706713791 in words is "two hundred four billion, seven hundred six million, seven hundred thirteen thousand, seven hundred ninety-one".