91196098173 has 6 divisors (see below), whose sum is σ = 131727697374. Its totient is φ = 60797398776.

The previous prime is 91196098153. The next prime is 91196098241. The reversal of 91196098173 is 37189069119.

It is a happy number.

91196098173 is a `hidden beast` number, since 9 + 1 + 19 + 609 + 8 + 17 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47164111929 + 44031986244 = 217173^2 + 209838^2 .

It is not a de Polignac number, because 91196098173 - 2²⁰ = 91195049597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91196098153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5066449890 + ... + 5066449907.

It is an arithmetic number, because the mean of its divisors is an integer number (21954616229).

Almost surely, 2^91196098173 is an apocalyptic number.

It is an amenable number.

91196098173 is a deficient number, since it is larger than the sum of its proper divisors (40531599201).

91196098173 is a wasteful number, since it uses less digits than its factorization.

91196098173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132899803 (or 10132899800 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The spelling of 91196098173 in words is "ninety-one billion, one hundred ninety-six million, ninety-eight thousand, one hundred seventy-three".