91359898272 has 48 divisors (see below), whose sum is σ = 266466372480. Its totient is φ = 30453299136.

The previous prime is 91359898261. The next prime is 91359898291. The reversal of 91359898272 is 27289895319.

91359898272 is a `hidden beast` number, since 9 + 1 + 359 + 8 + 9 + 8 + 272 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

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, 52869448 + ... + 52871175.

It is an arithmetic number, because the mean of its divisors is an integer number (5551382760).

Almost surely, 2^91359898272 is an apocalyptic number.

It is an amenable number.

91359898272 is an abundant number, since it is smaller than the sum of its proper divisors (175106474208).

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

91359898272 is a wasteful number, since it uses less digits than its factorization.

91359898272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105740642 (or 105740628 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 91359898272 in words is "ninety-one billion, three hundred fifty-nine million, eight hundred ninety-eight thousand, two hundred seventy-two".