91145184108 has 24 divisors (see below), whose sum is σ = 232005923520. Its totient is φ = 27619752720.

The previous prime is 91145184079. The next prime is 91145184121. The reversal of 91145184108 is 80148154119.

It is a self number, because there is not a number n which added to its sum of digits gives 91145184108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345246778 + ... + 345247041.

It is an arithmetic number, because the mean of its divisors is an integer number (9666913480).

Almost surely, 2^91145184108 is an apocalyptic number.

It is an amenable number.

91145184108 is an abundant number, since it is smaller than the sum of its proper divisors (140860739412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91145184108 is a wasteful number, since it uses less digits than its factorization.

91145184108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690493837 (or 690493835 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 42.

The spelling of 91145184108 in words is "ninety-one billion, one hundred forty-five million, one hundred eighty-four thousand, one hundred eight".