97858666685879 has 16 divisors (see below), whose sum is σ = 107059048462080. Its totient is φ = 88709006160000.

The previous prime is 97858666685867. The next prime is 97858666685903.

97858666685879 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 97858666685879 - 2³² = 97854371718583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97858666655879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62293679 + ... + 63845279.

It is an arithmetic number, because the mean of its divisors is an integer number (6691190528880).

Almost surely, 2^{97858666685879} is an apocalyptic number.

97858666685879 is a deficient number, since it is larger than the sum of its proper divisors (9200381776201).

97858666685879 is a wasteful number, since it uses less digits than its factorization.

97858666685879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567942.

The product of its digits is 526727577600, while the sum is 98.

The spelling of 97858666685879 in words is "ninety-seven trillion, eight hundred fifty-eight billion, six hundred sixty-six million, six hundred eighty-five thousand, eight hundred seventy-nine".