866441061275164 has 6 divisors (see below), whose sum is σ = 1516271857231544. Its totient is φ = 433220530637580.

The previous prime is 866441061275159. The next prime is 866441061275183. The reversal of 866441061275164 is 461572160144668.

It is a super-2 number, since 2×866441061275164² (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, 108305132659392 + ... + 108305132659399.

Almost surely, 2^{866441061275164} is an apocalyptic number.

It is an amenable number.

866441061275164 is a deficient number, since it is larger than the sum of its proper divisors (649830795956380).

866441061275164 is a wasteful number, since it uses less digits than its factorization.

866441061275164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216610265318795 (or 216610265318793 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 866441061275164 in words is "eight hundred sixty-six trillion, four hundred forty-one billion, sixty-one million, two hundred seventy-five thousand, one hundred sixty-four".