864108643331 has 4 divisors (see below), whose sum is σ = 878754552600. Its totient is φ = 849462734064.

The previous prime is 864108643303. The next prime is 864108643357. The reversal of 864108643331 is 133346801468.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 864108643331 - 2⁶ = 864108643267 is a prime.

It is a super-2 number, since 2×864108643331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864108643381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7322954546 + ... + 7322954663.

It is an arithmetic number, because the mean of its divisors is an integer number (219688638150).

Almost surely, 2^864108643331 is an apocalyptic number.

864108643331 is a deficient number, since it is larger than the sum of its proper divisors (14645909269).

864108643331 is a wasteful number, since it uses less digits than its factorization.

864108643331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14645909268.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 864108643331 in words is "eight hundred sixty-four billion, one hundred eight million, six hundred forty-three thousand, three hundred thirty-one".