97687899878679 has 32 divisors (see below), whose sum is σ = 167166459694080. Its totient is φ = 55722153225600.

The previous prime is 97687899878669. The next prime is 97687899878687.

97687899878679 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 97687899878679 - 2⁷ = 97687899878551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97687899878669) 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 31 ways as a sum of consecutive naturals, for example, 9673979887 + ... + 9673989984.

It is an arithmetic number, because the mean of its divisors is an integer number (5223951865440).

Almost surely, 2^{97687899878679} is an apocalyptic number.

97687899878679 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

97687899878679 is a deficient number, since it is larger than the sum of its proper divisors (69478559815401).

97687899878679 is a wasteful number, since it uses less digits than its factorization.

97687899878679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19347969908 (or 19347969902 counting only the distinct ones).

The product of its digits is 2322868617216, while the sum is 108.

The spelling of 97687899878679 in words is "ninety-seven trillion, six hundred eighty-seven billion, eight hundred ninety-nine million, eight hundred seventy-eight thousand, six hundred seventy-nine".