91466081280 has 880 divisors, whose sum is σ = 382825027200. Its totient is φ = 20874018816.

The previous prime is 91466081269. The next prime is 91466081299. The reversal of 91466081280 is 8218066419.

91466081280 is a `hidden beast` number, since 9 + 14 + 6 + 608 + 1 + 28 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 142248639 + ... + 142249281.

It is an arithmetic number, because the mean of its divisors is an integer number (435028440).

Almost surely, 2^91466081280 is an apocalyptic number.

91466081280 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 91466081280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191412513600).

91466081280 is an abundant number, since it is smaller than the sum of its proper divisors (291358945920).

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

91466081280 is an equidigital number, since it uses as much as digits as its factorization.

91466081280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 91466081280 in words is "ninety-one billion, four hundred sixty-six million, eighty-one thousand, two hundred eighty".