5205681266 has 16 divisors (see below), whose sum is σ = 7879576320. Its totient is φ = 2579262000.

The previous prime is 5205681259. The next prime is 5205681269. The reversal of 5205681266 is 6621865025.

It is not an unprimeable number, because it can be changed into a prime (5205681269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72575 + ... + 125213.

It is an arithmetic number, because the mean of its divisors is an integer number (492473520).

Almost surely, 2^5205681266 is an apocalyptic number.

5205681266 is a deficient number, since it is larger than the sum of its proper divisors (2673895054).

5205681266 is a wasteful number, since it uses less digits than its factorization.

5205681266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53089.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 5205681266 is about 72150.4072476379. The cubic root of 5205681266 is about 1733.1089213990.

The spelling of 5205681266 in words is "five billion, two hundred five million, six hundred eighty-one thousand, two hundred sixty-six".