866788526376652 has 12 divisors (see below), whose sum is σ = 1654778095810056. Its totient is φ = 393994784716640.

The previous prime is 866788526376637. The next prime is 866788526376697. The reversal of 866788526376652 is 256673625887668.

It is a self number, because there is not a number n which added to its sum of digits gives 866788526376652.

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, 9849869617873 + ... + 9849869617960.

It is an arithmetic number, because the mean of its divisors is an integer number (137898174650838).

Almost surely, 2^{866788526376652} is an apocalyptic number.

It is an amenable number.

866788526376652 is a deficient number, since it is larger than the sum of its proper divisors (787989569433404).

866788526376652 is a wasteful number, since it uses less digits than its factorization.

866788526376652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19699739235848 (or 19699739235846 counting only the distinct ones).

The product of its digits is 58525286400, while the sum is 85.

The spelling of 866788526376652 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, three hundred seventy-six thousand, six hundred fifty-two".