91030734368 has 192 divisors, whose sum is σ = 217163358720. Its totient is φ = 36721631232.

The previous prime is 91030734337. The next prime is 91030734401. The reversal of 91030734368 is 86343703019.

It is a Cunningham number, because it is equal to 301713²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97150796 + ... + 97151732.

It is an arithmetic number, because the mean of its divisors is an integer number (1131059160).

Almost surely, 2^91030734368 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 91030734368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108581679360).

91030734368 is an abundant number, since it is smaller than the sum of its proper divisors (126132624352).

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

91030734368 is a wasteful number, since it uses less digits than its factorization.

91030734368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 91030734368 in words is "ninety-one billion, thirty million, seven hundred thirty-four thousand, three hundred sixty-eight".