91169398015 has 8 divisors (see below), whose sum is σ = 109776669408. Its totient is φ = 72686590560.

The previous prime is 91169398009. The next prime is 91169398097. The reversal of 91169398015 is 51089396119.

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

It is not a de Polignac number, because 91169398015 - 2⁷ = 91169397887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31114371 + ... + 31117300.

It is an arithmetic number, because the mean of its divisors is an integer number (13722083676).

Almost surely, 2^91169398015 is an apocalyptic number.

91169398015 is a deficient number, since it is larger than the sum of its proper divisors (18607271393).

91169398015 is a wasteful number, since it uses less digits than its factorization.

91169398015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62231969.

The product of its (nonzero) digits is 524880, while the sum is 52.

The spelling of 91169398015 in words is "ninety-one billion, one hundred sixty-nine million, three hundred ninety-eight thousand, fifteen".