205847260806 has 16 divisors (see below), whose sum is σ = 449121296448. Its totient is φ = 62377957800.

The previous prime is 205847260781. The next prime is 205847260831. The reversal of 205847260806 is 608062748502.

It is an interprime number because it is at equal distance from previous prime (205847260781) and next prime (205847260831).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559448880 + ... + 1559449011.

It is an arithmetic number, because the mean of its divisors is an integer number (28070081028).

Almost surely, 2^205847260806 is an apocalyptic number.

205847260806 is an abundant number, since it is smaller than the sum of its proper divisors (243274035642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205847260806 is a wasteful number, since it uses less digits than its factorization.

205847260806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118897907.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 205847260806 in words is "two hundred five billion, eight hundred forty-seven million, two hundred sixty thousand, eight hundred six".