97543879864 has 16 divisors (see below), whose sum is σ = 183162566520. Its totient is φ = 48700528800.

The previous prime is 97543879859. The next prime is 97543879871. The reversal of 97543879864 is 46897834579.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 97543879793 and 97543879802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8920587 + ... + 8931514.

Almost surely, 2^97543879864 is an apocalyptic number.

It is an amenable number.

97543879864 is a deficient number, since it is larger than the sum of its proper divisors (85618686656).

97543879864 is a wasteful number, since it uses less digits than its factorization.

97543879864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17852790 (or 17852786 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 70.

The spelling of 97543879864 in words is "ninety-seven billion, five hundred forty-three million, eight hundred seventy-nine thousand, eight hundred sixty-four".