91112616480 has 48 divisors (see below), whose sum is σ = 287004743424. Its totient is φ = 24296697600.

The previous prime is 91112616443. The next prime is 91112616487. The reversal of 91112616480 is 8461621119.

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

It is not an unprimeable number, because it can be changed into a prime (91112616487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94908496 + ... + 94909455.

It is an arithmetic number, because the mean of its divisors is an integer number (5979265488).

Almost surely, 2^91112616480 is an apocalyptic number.

It is an amenable number.

91112616480 is an abundant number, since it is smaller than the sum of its proper divisors (195892126944).

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

91112616480 is a wasteful number, since it uses less digits than its factorization.

91112616480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189817969 (or 189817961 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 91112616480 in words is "ninety-one billion, one hundred twelve million, six hundred sixteen thousand, four hundred eighty".