205612342471 has 4 divisors (see below), whose sum is σ = 207922593600. Its totient is φ = 203302091344.

The previous prime is 205612342457. The next prime is 205612342489. The reversal of 205612342471 is 174243216502.

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 205612342471 - 2²⁵ = 205578788039 is a prime.

It is a super-3 number, since 3×205612342471³ (a number of 35 digits) contains 333 as substring.

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 205612342471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205612442471) 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, 1155125431 + ... + 1155125608.

It is an arithmetic number, because the mean of its divisors is an integer number (51980648400).

Almost surely, 2^205612342471 is an apocalyptic number.

205612342471 is a deficient number, since it is larger than the sum of its proper divisors (2310251129).

205612342471 is an equidigital number, since it uses as much as digits as its factorization.

205612342471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310251128.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 205612342471 its reverse (174243216502), we get a palindrome (379855558973).

The spelling of 205612342471 in words is "two hundred five billion, six hundred twelve million, three hundred forty-two thousand, four hundred seventy-one".