91882775660 has 48 divisors (see below), whose sum is σ = 207826196256. Its totient is φ = 33921088512.

The previous prime is 91882775651. The next prime is 91882775683. The reversal of 91882775660 is 6657728819.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91882775660.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2153252 + ... + 2195508.

It is an arithmetic number, because the mean of its divisors is an integer number (4329712422).

Almost surely, 2^91882775660 is an apocalyptic number.

It is an amenable number.

91882775660 is an abundant number, since it is smaller than the sum of its proper divisors (115943420596).

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

91882775660 is a wasteful number, since it uses less digits than its factorization.

91882775660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50642 (or 50640 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 91882775660 in words is "ninety-one billion, eight hundred eighty-two million, seven hundred seventy-five thousand, six hundred sixty".