97387194172191 has 32 divisors (see below), whose sum is σ = 161890992273408. Its totient is φ = 50590565353440.

The previous prime is 97387194172183. The next prime is 97387194172343. The reversal of 97387194172191 is 19127149178379.

It is a happy number.

It is not a de Polignac number, because 97387194172191 - 2³ = 97387194172183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97387194172091) 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, 81612936 + ... + 82797618.

It is an arithmetic number, because the mean of its divisors is an integer number (5059093508544).

Almost surely, 2^{97387194172191} is an apocalyptic number.

97387194172191 is a deficient number, since it is larger than the sum of its proper divisors (64503798101217).

97387194172191 is a wasteful number, since it uses less digits than its factorization.

97387194172191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540571.

The product of its digits is 48009024, while the sum is 69.

The spelling of 97387194172191 in words is "ninety-seven trillion, three hundred eighty-seven billion, one hundred ninety-four million, one hundred seventy-two thousand, one hundred ninety-one".