866507670466051 has 2 divisors, whose sum is σ = 866507670466052. Its totient is φ = 866507670466050.

The previous prime is 866507670465973. The next prime is 866507670466171. The reversal of 866507670466051 is 150664076705668.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866507670466051 - 2²⁵ = 866507636911619 is a prime.

It is not a weakly prime, because it can be changed into another prime (866507670466651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433253835233025 + 433253835233026.

It is an arithmetic number, because the mean of its divisors is an integer number (433253835233026).

Almost surely, 2^{866507670466051} is an apocalyptic number.

866507670466051 is a deficient number, since it is larger than the sum of its proper divisors (1).

866507670466051 is an equidigital number, since it uses as much as digits as its factorization.

866507670466051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 304819200, while the sum is 67.

The spelling of 866507670466051 in words is "eight hundred sixty-six trillion, five hundred seven billion, six hundred seventy million, four hundred sixty-six thousand, fifty-one".