863786543161 has 8 divisors (see below), whose sum is σ = 865600749000. Its totient is φ = 861973996800.

The previous prime is 863786543129. The next prime is 863786543171. The reversal of 863786543161 is 161345687368.

It can be written as a sum of positive squares in 4 ways, for example, as 409031877136 + 454754666025 = 639556^2 + 674355^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 863786543161 - 2⁵ = 863786543129 is a prime.

It is a super-2 number, since 2×863786543161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 863786543096 and 863786543105.

It is not an unprimeable number, because it can be changed into a prime (863786543171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630015 + ... + 1457563.

It is an arithmetic number, because the mean of its divisors is an integer number (108200093625).

Almost surely, 2^863786543161 is an apocalyptic number.

It is an amenable number.

863786543161 is a deficient number, since it is larger than the sum of its proper divisors (1814205839).

863786543161 is a wasteful number, since it uses less digits than its factorization.

863786543161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829739.

The product of its digits is 17418240, while the sum is 58.

The spelling of 863786543161 in words is "eight hundred sixty-three billion, seven hundred eighty-six million, five hundred forty-three thousand, one hundred sixty-one".