866857052282836 has 6 divisors (see below), whose sum is σ = 1516999841494970. Its totient is φ = 433428526141416.

The previous prime is 866857052282803. The next prime is 866857052282857. The reversal of 866857052282836 is 638282250758668.

866857052282836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 725922878017936 + 140934174264900 = 26942956^2 + 11871570^2 .

It is a super-2 number, since 2×866857052282836² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108357131535351 + ... + 108357131535358.

Almost surely, 2^{866857052282836} is an apocalyptic number.

It is an amenable number.

866857052282836 is a deficient number, since it is larger than the sum of its proper divisors (650142789212134).

866857052282836 is a wasteful number, since it uses less digits than its factorization.

866857052282836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216714263070713 (or 216714263070711 counting only the distinct ones).

The product of its (nonzero) digits is 3715891200, while the sum is 76.

The spelling of 866857052282836 in words is "eight hundred sixty-six trillion, eight hundred fifty-seven billion, fifty-two million, two hundred eighty-two thousand, eight hundred thirty-six".