91084378704000 has 512 divisors, whose sum is σ = 330264074649600. Its totient is φ = 22022751744000.

The previous prime is 91084378703993. The next prime is 91084378704049. The reversal of 91084378704000 is 40787348019.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199884417 + ... + 200339583.

It is an arithmetic number, because the mean of its divisors is an integer number (645047020800).

Almost surely, 2^{91084378704000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91084378704000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165132037324800).

91084378704000 is an abundant number, since it is smaller than the sum of its proper divisors (239179695945600).

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

91084378704000 is a wasteful number, since it uses less digits than its factorization.

91084378704000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455589 (or 455567 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 91084378704000 in words is "ninety-one trillion, eighty-four billion, three hundred seventy-eight million, seven hundred four thousand".