866786276340008 has 16 divisors (see below), whose sum is σ = 1625265548458560. Its totient is φ = 433382130084400.

The previous prime is 866786276339959. The next prime is 866786276340113. The reversal of 866786276340008 is 800043672687668.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375676048 + ... + 1376305983.

It is an arithmetic number, because the mean of its divisors is an integer number (101579096778660).

Almost surely, 2^{866786276340008} is an apocalyptic number.

It is an amenable number.

866786276340008 is a deficient number, since it is larger than the sum of its proper divisors (758479272118552).

866786276340008 is a wasteful number, since it uses less digits than its factorization.

866786276340008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752021408 (or 2752021404 counting only the distinct ones).

The product of its (nonzero) digits is 780337152, while the sum is 71.

The spelling of 866786276340008 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, two hundred seventy-six million, three hundred forty thousand, eight".