91546751880 has 256 divisors, whose sum is σ = 320545382400. Its totient is φ = 23195462400.

The previous prime is 91546751827. The next prime is 91546751897. The reversal of 91546751880 is 8815764519.

It is a happy number.

91546751880 is a `hidden beast` number, since 9 + 1 + 5 + 46 + 7 + 518 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3738637 + ... + 3763043.

It is an arithmetic number, because the mean of its divisors is an integer number (1252130400).

Almost surely, 2^91546751880 is an apocalyptic number.

91546751880 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 91546751880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160272691200).

91546751880 is an abundant number, since it is smaller than the sum of its proper divisors (228998630520).

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

91546751880 is a wasteful number, since it uses less digits than its factorization.

91546751880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24601 (or 24591 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 91546751880 in words is "ninety-one billion, five hundred forty-six million, seven hundred fifty-one thousand, eight hundred eighty".