866724458633093 has 2 divisors, whose sum is σ = 866724458633094. Its totient is φ = 866724458633092.

The previous prime is 866724458633051. The next prime is 866724458633113. The reversal of 866724458633093 is 390336854427668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646450863458404 + 220273595174689 = 25425398^2 + 14841617^2 .

It is a cyclic number.

It is not a de Polignac number, because 866724458633093 - 2²² = 866724454438789 is a prime.

It is a super-2 number, since 2×866724458633093² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 866724458633093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866724458633003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433362229316546 + 433362229316547.

It is an arithmetic number, because the mean of its divisors is an integer number (433362229316547).

Almost surely, 2^{866724458633093} is an apocalyptic number.

It is an amenable number.

866724458633093 is a deficient number, since it is larger than the sum of its proper divisors (1).

866724458633093 is an equidigital number, since it uses as much as digits as its factorization.

866724458633093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3762339840, while the sum is 74.

The spelling of 866724458633093 in words is "eight hundred sixty-six trillion, seven hundred twenty-four billion, four hundred fifty-eight million, six hundred thirty-three thousand, ninety-three".