866508011502741 has 6 divisors (see below), whose sum is σ = 1251622683281750. Its totient is φ = 577672007668488.

The previous prime is 866508011502713. The next prime is 866508011502751. The reversal of 866508011502741 is 147205110805668.

866508011502741 is a `hidden beast` number, since 8 + 6 + 6 + 5 + 0 + 80 + 11 + 502 + 7 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 459983460200625 + 406524551302116 = 21447225^2 + 20162454^2 .

It is not a de Polignac number, because 866508011502741 - 2¹¹ = 866508011500693 is a prime.

It is a super-2 number, since 2×866508011502741² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866508011502751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48139333972366 + ... + 48139333972383.

Almost surely, 2^{866508011502741} is an apocalyptic number.

It is an amenable number.

866508011502741 is a deficient number, since it is larger than the sum of its proper divisors (385114671779009).

866508011502741 is a wasteful number, since it uses less digits than its factorization.

866508011502741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96278667944755 (or 96278667944752 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 866508011502741 in words is "eight hundred sixty-six trillion, five hundred eight billion, eleven million, five hundred two thousand, seven hundred forty-one".