866786483205436 has 12 divisors (see below), whose sum is σ = 1516876556537160. Its totient is φ = 433393181337680.

The previous prime is 866786483205359. The next prime is 866786483205439. The reversal of 866786483205436 is 634502384687668.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866786483205439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38292891 + ... + 56567821.

It is an arithmetic number, because the mean of its divisors is an integer number (126406379711430).

Almost surely, 2^{866786483205436} is an apocalyptic number.

It is an amenable number.

866786483205436 is a deficient number, since it is larger than the sum of its proper divisors (650090073331724).

866786483205436 is a wasteful number, since it uses less digits than its factorization.

866786483205436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30132524 (or 30132522 counting only the distinct ones).

The product of its (nonzero) digits is 6688604160, while the sum is 76.

The spelling of 866786483205436 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred eighty-three million, two hundred five thousand, four hundred thirty-six".