91504233216 has 216 divisors, whose sum is σ = 288139859280. Its totient is φ = 27697152000.

The previous prime is 91504233193. The next prime is 91504233253. The reversal of 91504233216 is 61233240519.

91504233216 is a `hidden beast` number, since 9 + 15 + 0 + 423 + 3 + 216 = 666.

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 23 ways as a sum of consecutive naturals, for example, 32667016 + ... + 32669816.

It is an arithmetic number, because the mean of its divisors is an integer number (1333980830).

Almost surely, 2^91504233216 is an apocalyptic number.

91504233216 is a gapful number since it is divisible by the number (96) 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 91504233216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144069929640).

91504233216 is an abundant number, since it is smaller than the sum of its proper divisors (196635626064).

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

91504233216 is a wasteful number, since it uses less digits than its factorization.

91504233216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123 (or 4106 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 91504233216 in words is "ninety-one billion, five hundred four million, two hundred thirty-three thousand, two hundred sixteen".