205272467279 has 4 divisors (see below), whose sum is σ = 223933600680. Its totient is φ = 186611333880.

The previous prime is 205272467251. The next prime is 205272467293. The reversal of 205272467279 is 972764272502.

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 205272467279 - 2¹² = 205272463183 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 205272467279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205272461279) 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, 9330566684 + ... + 9330566705.

It is an arithmetic number, because the mean of its divisors is an integer number (55983400170).

Almost surely, 2^205272467279 is an apocalyptic number.

205272467279 is a deficient number, since it is larger than the sum of its proper divisors (18661133401).

205272467279 is a wasteful number, since it uses less digits than its factorization.

205272467279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18661133400.

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 205272467279 in words is "two hundred five billion, two hundred seventy-two million, four hundred sixty-seven thousand, two hundred seventy-nine".