864518536785 has 16 divisors (see below), whose sum is σ = 1427849971200. Its totient is φ = 446203115520.

The previous prime is 864518536747. The next prime is 864518536853. The reversal of 864518536785 is 587635815468.

864518536785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 864518536785 - 2⁷ = 864518536657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929589360 + ... + 929590289.

It is an arithmetic number, because the mean of its divisors is an integer number (89240623200).

Almost surely, 2^864518536785 is an apocalyptic number.

It is an amenable number.

864518536785 is a deficient number, since it is larger than the sum of its proper divisors (563331434415).

864518536785 is a wasteful number, since it uses less digits than its factorization.

864518536785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859179688.

The product of its digits is 193536000, while the sum is 66.

The spelling of 864518536785 in words is "eight hundred sixty-four billion, five hundred eighteen million, five hundred thirty-six thousand, seven hundred eighty-five".