91046853568 has 28 divisors (see below), whose sum is σ = 197095747032. Its totient is φ = 41384933120.

The previous prime is 91046853503. The next prime is 91046853571. The reversal of 91046853568 is 86535864019.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 64663255 + ... + 64664662.

Almost surely, 2^91046853568 is an apocalyptic number.

It is an amenable number.

91046853568 is an abundant number, since it is smaller than the sum of its proper divisors (106048893464).

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

91046853568 is a wasteful number, since it uses less digits than its factorization.

91046853568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129327940 (or 129327930 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 91046853568 in words is "ninety-one billion, forty-six million, eight hundred fifty-three thousand, five hundred sixty-eight".