866786233030851 has 16 divisors (see below), whose sum is σ = 1398512241529344. Its totient is φ = 466170747176064.

The previous prime is 866786233030847. The next prime is 866786233030867. The reversal of 866786233030851 is 158030332687668.

It is not a de Polignac number, because 866786233030851 - 2² = 866786233030847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (866786233035851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1213986320415 + ... + 1213986321128.

It is an arithmetic number, because the mean of its divisors is an integer number (87407015095584).

Almost surely, 2^{866786233030851} is an apocalyptic number.

866786233030851 is a deficient number, since it is larger than the sum of its proper divisors (531726008498493).

866786233030851 is a wasteful number, since it uses less digits than its factorization.

866786233030851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427972641570.

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 866786233030851 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, two hundred thirty-three million, thirty thousand, eight hundred fifty-one".