866788526378236 has 72 divisors (see below), whose sum is σ = 1971209017179360. Its totient is φ = 326064649384320.

The previous prime is 866788526378233. The next prime is 866788526378251. The reversal of 866788526378236 is 632873625887668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866788526378233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4410949495 + ... + 4411145998.

It is an arithmetic number, because the mean of its divisors is an integer number (27377903016380).

Almost surely, 2^{866788526378236} is an apocalyptic number.

It is an amenable number.

866788526378236 is an abundant number, since it is smaller than the sum of its proper divisors (1104420490801124).

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

866788526378236 is a wasteful number, since it uses less digits than its factorization.

866788526378236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8822095555 (or 8822095542 counting only the distinct ones).

The product of its digits is 46820229120, while the sum is 85.

The spelling of 866788526378236 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, three hundred seventy-eight thousand, two hundred thirty-six".