97172570828 has 12 divisors (see below), whose sum is σ = 170054218320. Its totient is φ = 48585651312.

The previous prime is 97172570797. The next prime is 97172570851. The reversal of 97172570828 is 82807527179.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 424625 + ... + 612087.

It is an arithmetic number, because the mean of its divisors is an integer number (14171184860).

Almost surely, 2^97172570828 is an apocalyptic number.

It is an amenable number.

97172570828 is a deficient number, since it is larger than the sum of its proper divisors (72881647492).

97172570828 is a wasteful number, since it uses less digits than its factorization.

97172570828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317056 (or 317054 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 56.

The spelling of 97172570828 in words is "ninety-seven billion, one hundred seventy-two million, five hundred seventy thousand, eight hundred twenty-eight".