91018975676 has 12 divisors (see below), whose sum is σ = 167666534280. Its totient is φ = 43114251600.

The previous prime is 91018975667. The next prime is 91018975727. The reversal of 91018975676 is 67657981019.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 598808975 + ... + 598809126.

It is an arithmetic number, because the mean of its divisors is an integer number (13972211190).

Almost surely, 2^91018975676 is an apocalyptic number.

It is an amenable number.

91018975676 is a deficient number, since it is larger than the sum of its proper divisors (76647558604).

91018975676 is a wasteful number, since it uses less digits than its factorization.

91018975676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197618124 (or 1197618122 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 59.

The spelling of 91018975676 in words is "ninety-one billion, eighteen million, nine hundred seventy-five thousand, six hundred seventy-six".