866508257003061 has 8 divisors (see below), whose sum is σ = 1161727460586784. Its totient is φ = 574480612377360.

The previous prime is 866508257003033. The next prime is 866508257003063. The reversal of 866508257003061 is 160300752805668.

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

It is a de Polignac number, because none of the positive numbers 2^k-866508257003061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 866508257002992 and 866508257003010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866508257003063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797889738871 + ... + 797889739956.

It is an arithmetic number, because the mean of its divisors is an integer number (145215932573348).

Almost surely, 2^{866508257003061} is an apocalyptic number.

It is an amenable number.

866508257003061 is a deficient number, since it is larger than the sum of its proper divisors (295219203583723).

866508257003061 is a wasteful number, since it uses less digits than its factorization.

866508257003061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595779479011.

The product of its (nonzero) digits is 14515200, while the sum is 57.

The spelling of 866508257003061 in words is "eight hundred sixty-six trillion, five hundred eight billion, two hundred fifty-seven million, three thousand, sixty-one".