863512262117 has 4 divisors (see below), whose sum is σ = 863525036076. Its totient is φ = 863499488160.

The previous prime is 863512262069. The next prime is 863512262237. The reversal of 863512262117 is 711262215368.

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

It can be written as a sum of positive squares in 2 ways, for example, as 831827906116 + 31684356001 = 912046^2 + 178001^2 .

It is a cyclic number.

It is not a de Polignac number, because 863512262117 - 2¹⁰ = 863512261093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863512262617) 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, 6285038 + ... + 6420959.

It is an arithmetic number, because the mean of its divisors is an integer number (215881259019).

Almost surely, 2^863512262117 is an apocalyptic number.

It is an amenable number.

863512262117 is a deficient number, since it is larger than the sum of its proper divisors (12773959).

863512262117 is a wasteful number, since it uses less digits than its factorization.

863512262117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12773958.

The product of its digits is 241920, while the sum is 44.

The spelling of 863512262117 in words is "eight hundred sixty-three billion, five hundred twelve million, two hundred sixty-two thousand, one hundred seventeen".