91577014555528 has 32 divisors (see below), whose sum is σ = 171792179507520. Its totient is φ = 45765767880000.

The previous prime is 91577014555513. The next prime is 91577014555561. The reversal of 91577014555528 is 82555541077519.

It is a self number, because there is not a number n which added to its sum of digits gives 91577014555528.

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, 1157536693 + ... + 1157615803.

It is an arithmetic number, because the mean of its divisors is an integer number (5368505609610).

Almost surely, 2^{91577014555528} is an apocalyptic number.

It is an amenable number.

91577014555528 is a deficient number, since it is larger than the sum of its proper divisors (80215164951992).

91577014555528 is a wasteful number, since it uses less digits than its factorization.

91577014555528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149149 (or 149145 counting only the distinct ones).

The product of its (nonzero) digits is 88200000, while the sum is 64.

The spelling of 91577014555528 in words is "ninety-one trillion, five hundred seventy-seven billion, fourteen million, five hundred fifty-five thousand, five hundred twenty-eight".