91849983120 has 240 divisors, whose sum is σ = 360030528000. Its totient is φ = 20547542016.

The previous prime is 91849983119. The next prime is 91849983161. The reversal of 91849983120 is 2138994819.

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43006 + ... + 430754.

It is an arithmetic number, because the mean of its divisors is an integer number (1500127200).

Almost surely, 2^91849983120 is an apocalyptic number.

91849983120 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 91849983120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180015264000).

91849983120 is an abundant number, since it is smaller than the sum of its proper divisors (268180544880).

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

91849983120 is a wasteful number, since it uses less digits than its factorization.

91849983120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387822 (or 387813 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 91849983120 in words is "ninety-one billion, eight hundred forty-nine million, nine hundred eighty-three thousand, one hundred twenty".