97187597993 has 8 divisors (see below), whose sum is σ = 102920015520. Its totient is φ = 91456902720.

The previous prime is 97187597989. The next prime is 97187598019. The reversal of 97187597993 is 39979578179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97187597993 - 2² = 97187597989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97187597993.

It is not an unprimeable number, because it can be changed into a prime (97187597933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313463 + ... + 540956.

It is an arithmetic number, because the mean of its divisors is an integer number (12865001940).

Almost surely, 2^97187597993 is an apocalyptic number.

It is an amenable number.

97187597993 is a deficient number, since it is larger than the sum of its proper divisors (5732417527).

97187597993 is a wasteful number, since it uses less digits than its factorization.

97187597993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861127.

The product of its digits is 270050760, while the sum is 74.

The spelling of 97187597993 in words is "ninety-seven billion, one hundred eighty-seven million, five hundred ninety-seven thousand, nine hundred ninety-three".