205272467278 has 4 divisors (see below), whose sum is σ = 307908700920. Its totient is φ = 102636233638.

The previous prime is 205272467251. The next prime is 205272467293. The reversal of 205272467278 is 872764272502.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51318116818 + ... + 51318116821.

It is an arithmetic number, because the mean of its divisors is an integer number (76977175230).

Almost surely, 2^205272467278 is an apocalyptic number.

205272467278 is a deficient number, since it is larger than the sum of its proper divisors (102636233642).

205272467278 is a wasteful number, since it uses less digits than its factorization.

205272467278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102636233641.

The product of its (nonzero) digits is 5268480, while the sum is 52.

The spelling of 205272467278 in words is "two hundred five billion, two hundred seventy-two million, four hundred sixty-seven thousand, two hundred seventy-eight".