91199980673 has 8 divisors (see below), whose sum is σ = 95198229888. Its totient is φ = 87204484224.

The previous prime is 91199980667. The next prime is 91199980679. The reversal of 91199980673 is 37608999119.

It is an interprime number because it is at equal distance from previous prime (91199980667) and next prime (91199980679).

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 91199980673 - 2¹⁸ = 91199718529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91199980679) 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, 620336 + ... + 753137.

It is an arithmetic number, because the mean of its divisors is an integer number (11899778736).

Almost surely, 2^91199980673 is an apocalyptic number.

It is an amenable number.

91199980673 is a deficient number, since it is larger than the sum of its proper divisors (3998249215).

91199980673 is a wasteful number, since it uses less digits than its factorization.

91199980673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376383.

The product of its (nonzero) digits is 6613488, while the sum is 62.

The spelling of 91199980673 in words is "ninety-one billion, one hundred ninety-nine million, nine hundred eighty thousand, six hundred seventy-three".