91273029120 has 1200 divisors, whose sum is σ = 410129718768. Its totient is φ = 19229736960.

The previous prime is 91273029119. The next prime is 91273029131. The reversal of 91273029120 is 2192037219.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 132087975 + ... + 132088665.

Almost surely, 2^91273029120 is an apocalyptic number.

91273029120 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 91273029120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205064859384).

91273029120 is an abundant number, since it is smaller than the sum of its proper divisors (318856689648).

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

91273029120 is a wasteful number, since it uses less digits than its factorization.

91273029120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 91273029120 in words is "ninety-one billion, two hundred seventy-three million, twenty-nine thousand, one hundred twenty".