91108800000 has 1200 divisors, whose sum is σ = 367457262480. Its totient is φ = 22394880000.

The previous prime is 91108799939. The next prime is 91108800001. The reversal of 91108800000 is 880119.

It is a tau number, because it is divible by the number of its divisors (1200).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91108800001) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2462399982 + ... + 2462400018.

Almost surely, 2^91108800000 is an apocalyptic number.

91108800000 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 91108800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183728631240).

91108800000 is an abundant number, since it is smaller than the sum of its proper divisors (276348462480).

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

91108800000 is an frugal number, since it uses more digits than its factorization.

91108800000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 91108800000 in words is "ninety-one billion, one hundred eight million, eight hundred thousand".