91841851760 has 40 divisors (see below), whose sum is σ = 215090960976. Its totient is φ = 36468584960.

The previous prime is 91841851729. The next prime is 91841851831. The reversal of 91841851760 is 6715814819.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 91841851699 and 91841851708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4178906 + ... + 4200825.

Almost surely, 2^91841851760 is an apocalyptic number.

It is an amenable number.

91841851760 is an abundant number, since it is smaller than the sum of its proper divisors (123249109216).

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

91841851760 is a wasteful number, since it uses less digits than its factorization.

91841851760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8379881 (or 8379875 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 91841851760 in words is "ninety-one billion, eight hundred forty-one million, eight hundred fifty-one thousand, seven hundred sixty".