866132653406087 has 4 divisors (see below), whose sum is σ = 866142064607760. Its totient is φ = 866123242204416.

The previous prime is 866132653406077. The next prime is 866132653406117. The reversal of 866132653406087 is 780604356231668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 866132653406087 - 2²⁸ = 866132384970631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866132653406077) 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, 4705462787 + ... + 4705646852.

It is an arithmetic number, because the mean of its divisors is an integer number (216535516151940).

Almost surely, 2^{866132653406087} is an apocalyptic number.

866132653406087 is a deficient number, since it is larger than the sum of its proper divisors (9411201673).

866132653406087 is an equidigital number, since it uses as much as digits as its factorization.

866132653406087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9411201672.

The product of its (nonzero) digits is 209018880, while the sum is 65.

The spelling of 866132653406087 in words is "eight hundred sixty-six trillion, one hundred thirty-two billion, six hundred fifty-three million, four hundred six thousand, eighty-seven".