91080798641 has 16 divisors (see below), whose sum is σ = 106230230400. Its totient is φ = 78059293200.

The previous prime is 91080798637. The next prime is 91080798643. The reversal of 91080798641 is 14689708019.

It is not a de Polignac number, because 91080798641 - 2² = 91080798637 is a prime.

It is a super-3 number, since 3×91080798641³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91080798643) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4208450 + ... + 4230036.

It is an arithmetic number, because the mean of its divisors is an integer number (6639389400).

Almost surely, 2^91080798641 is an apocalyptic number.

It is an amenable number.

91080798641 is a deficient number, since it is larger than the sum of its proper divisors (15149431759).

91080798641 is a wasteful number, since it uses less digits than its factorization.

91080798641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33909 (or 33895 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 53.

The spelling of 91080798641 in words is "ninety-one billion, eighty million, seven hundred ninety-eight thousand, six hundred forty-one".