855891500066 has 8 divisors (see below), whose sum is σ = 1286517496320. Its totient is φ = 427052334628.

The previous prime is 855891500053. The next prime is 855891500147. The reversal of 855891500066 is 660005198558.

855891500066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 855891499990 and 855891500017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446706506 + ... + 446708421.

It is an arithmetic number, because the mean of its divisors is an integer number (160814687040).

Almost surely, 2^855891500066 is an apocalyptic number.

855891500066 is a deficient number, since it is larger than the sum of its proper divisors (430625996254).

855891500066 is a wasteful number, since it uses less digits than its factorization.

855891500066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893415408.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The spelling of 855891500066 in words is "eight hundred fifty-five billion, eight hundred ninety-one million, five hundred thousand, sixty-six".