91331075700 has 216 divisors, whose sum is σ = 288696445856. Its totient is φ = 24149664000.

The previous prime is 91331075677. The next prime is 91331075743. The reversal of 91331075700 is 757013319.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 62856174 + ... + 62857626.

Almost surely, 2^91331075700 is an apocalyptic number.

91331075700 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 91331075700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144348222928).

91331075700 is an abundant number, since it is smaller than the sum of its proper divisors (197365370156).

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

91331075700 is a wasteful number, since it uses less digits than its factorization.

91331075700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 2005 counting only the distinct ones).

The product of its (nonzero) digits is 19845, while the sum is 36.

The spelling of 91331075700 in words is "ninety-one billion, three hundred thirty-one million, seventy-five thousand, seven hundred".