91348991123 has 8 divisors (see below), whose sum is σ = 99295238448. Its totient is φ = 83534086944.

The previous prime is 91348991117. The next prime is 91348991171. The reversal of 91348991123 is 32119984319.

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 91348991123 - 2¹⁰ = 91348990099 is a prime.

It is a super-2 number, since 2×91348991123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91348991113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32834336 + ... + 32837117.

It is an arithmetic number, because the mean of its divisors is an integer number (12411904806).

Almost surely, 2^91348991123 is an apocalyptic number.

91348991123 is a deficient number, since it is larger than the sum of its proper divisors (7946247325).

91348991123 is a wasteful number, since it uses less digits than its factorization.

91348991123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65671573.

The product of its digits is 419904, while the sum is 50.

The spelling of 91348991123 in words is "ninety-one billion, three hundred forty-eight million, nine hundred ninety-one thousand, one hundred twenty-three".