864586962081 has 24 divisors (see below), whose sum is σ = 1327984674120. Its totient is φ = 540157648896.

The previous prime is 864586962061. The next prime is 864586962101. The reversal of 864586962081 is 180269685468.

864586962081 is a `hidden beast` number, since 86 + 458 + 6 + 9 + 6 + 20 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (864586962061) and next prime (864586962101).

It can be written as a sum of positive squares in 4 ways, for example, as 209594574225 + 654992387856 = 457815^2 + 809316^2 .

It is not a de Polignac number, because 864586962081 - 2¹⁰ = 864586961057 is a prime.

It is a super-2 number, since 2×864586962081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (864586962061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12090736 + ... + 12162033.

It is an arithmetic number, because the mean of its divisors is an integer number (55332694755).

Almost surely, 2^864586962081 is an apocalyptic number.

It is an amenable number.

864586962081 is a deficient number, since it is larger than the sum of its proper divisors (463397712039).

864586962081 is a wasteful number, since it uses less digits than its factorization.

864586962081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24253025 (or 24253022 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 63.

The spelling of 864586962081 in words is "eight hundred sixty-four billion, five hundred eighty-six million, nine hundred sixty-two thousand, eighty-one".