91109849600 has 480 divisors, whose sum is σ = 284631532416. Its totient is φ = 28075622400.

The previous prime is 91109849599. The next prime is 91109849629. The reversal of 91109849600 is 694890119.

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, 95602724 + ... + 95603676.

Almost surely, 2^91109849600 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 91109849600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142315766208).

91109849600 is an abundant number, since it is smaller than the sum of its proper divisors (193521682816).

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

91109849600 is a wasteful number, since it uses less digits than its factorization.

91109849600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 91109849600 in words is "ninety-one billion, one hundred nine million, eight hundred forty-nine thousand, six hundred".