866130377871683 has 2 divisors, whose sum is σ = 866130377871684. Its totient is φ = 866130377871682.

The previous prime is 866130377871617. The next prime is 866130377871763. The reversal of 866130377871683 is 386178773031668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866130377871683 - 2²⁶ = 866130310762819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866130377871683.

It is not a weakly prime, because it can be changed into another prime (866130377871883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433065188935841 + 433065188935842.

It is an arithmetic number, because the mean of its divisors is an integer number (433065188935842).

Almost surely, 2^{866130377871683} is an apocalyptic number.

866130377871683 is a deficient number, since it is larger than the sum of its proper divisors (1).

866130377871683 is an equidigital number, since it uses as much as digits as its factorization.

866130377871683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024192512, while the sum is 74.

The spelling of 866130377871683 in words is "eight hundred sixty-six trillion, one hundred thirty billion, three hundred seventy-seven million, eight hundred seventy-one thousand, six hundred eighty-three".