866758040623146 has 48 divisors (see below), whose sum is σ = 2063435373435744. Its totient is φ = 241885964821536.

The previous prime is 866758040623117. The next prime is 866758040623183. The reversal of 866758040623146 is 641326040857668.

It is a happy number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 34280878065 + ... + 34280903348.

It is an arithmetic number, because the mean of its divisors is an integer number (42988236946578).

Almost surely, 2^{866758040623146} is an apocalyptic number.

866758040623146 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

866758040623146 is an abundant number, since it is smaller than the sum of its proper divisors (1196677332812598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866758040623146 is a wasteful number, since it uses less digits than its factorization.

866758040623146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68561781475 (or 68561781468 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 66.

The spelling of 866758040623146 in words is "eight hundred sixty-six trillion, seven hundred fifty-eight billion, forty million, six hundred twenty-three thousand, one hundred forty-six".