206563665260 has 96 divisors (see below), whose sum is σ = 449116738560. Its totient is φ = 79769783808.

The previous prime is 206563665239. The next prime is 206563665281. The reversal of 206563665260 is 62566365602.

It is an interprime number because it is at equal distance from previous prime (206563665239) and next prime (206563665281).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14495699 + ... + 14509941.

It is an arithmetic number, because the mean of its divisors is an integer number (4678299360).

Almost surely, 2^206563665260 is an apocalyptic number.

206563665260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206563665260 is an abundant number, since it is smaller than the sum of its proper divisors (242553073300).

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

206563665260 is a wasteful number, since it uses less digits than its factorization.

206563665260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14535 (or 14533 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 206563665260 in words is "two hundred six billion, five hundred sixty-three million, six hundred sixty-five thousand, two hundred sixty".