91103316480 has 480 divisors, whose sum is σ = 359187903360. Its totient is φ = 21124055040.

The previous prime is 91103316443. The next prime is 91103316481. The reversal of 91103316480 is 8461330119.

91103316480 is a `hidden beast` number, since 9 + 1 + 1 + 0 + 3 + 3 + 1 + 648 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (91103316481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5821306 + ... + 5836934.

It is an arithmetic number, because the mean of its divisors is an integer number (748308132).

Almost surely, 2^91103316480 is an apocalyptic number.

91103316480 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91103316480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179593951680).

91103316480 is an abundant number, since it is smaller than the sum of its proper divisors (268084586880).

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

91103316480 is a wasteful number, since it uses less digits than its factorization.

91103316480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15692 (or 15673 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

Adding to 91103316480 its reverse (8461330119), we get a palindrome (99564646599).

The spelling of 91103316480 in words is "ninety-one billion, one hundred three million, three hundred sixteen thousand, four hundred eighty".