866184632800349 has 2 divisors, whose sum is σ = 866184632800350. Its totient is φ = 866184632800348.

The previous prime is 866184632800339. The next prime is 866184632800393. The reversal of 866184632800349 is 943008236481668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 865765302732100 + 419330068249 = 29423890^2 + 647557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866184632800349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866184632800339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433092316400174 + 433092316400175.

It is an arithmetic number, because the mean of its divisors is an integer number (433092316400175).

Almost surely, 2^{866184632800349} is an apocalyptic number.

It is an amenable number.

866184632800349 is a deficient number, since it is larger than the sum of its proper divisors (1).

866184632800349 is an equidigital number, since it uses as much as digits as its factorization.

866184632800349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 286654464, while the sum is 68.

The spelling of 866184632800349 in words is "eight hundred sixty-six trillion, one hundred eighty-four billion, six hundred thirty-two million, eight hundred thousand, three hundred forty-nine".