91232757000 has 768 divisors, whose sum is σ = 401420448000. Its totient is φ = 18954432000.

The previous prime is 91232756981. The next prime is 91232757017. The reversal of 91232757000 is 75723219.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14549866 + ... + 14556134.

It is an arithmetic number, because the mean of its divisors is an integer number (522682875).

Almost surely, 2^91232757000 is an apocalyptic number.

91232757000 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 91232757000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200710224000).

91232757000 is an abundant number, since it is smaller than the sum of its proper divisors (310187691000).

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

91232757000 is a wasteful number, since it uses less digits than its factorization.

91232757000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324 (or 6297 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The spelling of 91232757000 in words is "ninety-one billion, two hundred thirty-two million, seven hundred fifty-seven thousand".