865080266355 has 16 divisors (see below), whose sum is σ = 1537920473760. Its totient is φ = 461376141984.

The previous prime is 865080266353. The next prime is 865080266411. The reversal of 865080266355 is 553662080568.

865080266355 is a `hidden beast` number, since 8 + 6 + 508 + 0 + 26 + 63 + 55 = 666.

It is not a de Polignac number, because 865080266355 - 2¹ = 865080266353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (865080266353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3204000852 + ... + 3204001121.

It is an arithmetic number, because the mean of its divisors is an integer number (96120029610).

Almost surely, 2^865080266355 is an apocalyptic number.

865080266355 is a deficient number, since it is larger than the sum of its proper divisors (672840207405).

865080266355 is a wasteful number, since it uses less digits than its factorization.

865080266355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408001987 (or 6408001981 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 865080266355 in words is "eight hundred sixty-five billion, eighty million, two hundred sixty-six thousand, three hundred fifty-five".