97171737985 has 16 divisors (see below), whose sum is σ = 133323724800. Its totient is φ = 66602235456.

The previous prime is 97171737977. The next prime is 97171737997. The reversal of 97171737985 is 58973717179.

It is a cyclic number.

It is not a de Polignac number, because 97171737985 - 2³ = 97171737977 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 541630 + ... + 698359.

It is an arithmetic number, because the mean of its divisors is an integer number (8332732800).

Almost surely, 2^97171737985 is an apocalyptic number.

It is an amenable number.

97171737985 is a deficient number, since it is larger than the sum of its proper divisors (36151986815).

97171737985 is a wasteful number, since it uses less digits than its factorization.

97171737985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242240.

The product of its digits is 23337720, while the sum is 64.

The spelling of 97171737985 in words is "ninety-seven billion, one hundred seventy-one million, seven hundred thirty-seven thousand, nine hundred eighty-five".