91608261396 has 12 divisors (see below), whose sum is σ = 213752609952. Its totient is φ = 30536087128.

The previous prime is 91608261391. The next prime is 91608261449. The reversal of 91608261396 is 69316280619.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91608261391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817010880 + ... + 3817010903.

It is an arithmetic number, because the mean of its divisors is an integer number (17812717496).

Almost surely, 2^91608261396 is an apocalyptic number.

It is an amenable number.

91608261396 is an abundant number, since it is smaller than the sum of its proper divisors (122144348556).

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

91608261396 is a wasteful number, since it uses less digits than its factorization.

91608261396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634021790 (or 7634021788 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 91608261396 in words is "ninety-one billion, six hundred eight million, two hundred sixty-one thousand, three hundred ninety-six".