91015466880 has 512 divisors, whose sum is σ = 321797629440. Its totient is φ = 21741797376.

The previous prime is 91015466863. The next prime is 91015466909. The reversal of 91015466880 is 8866451019.

It is a super-2 number, since 2×91015466880² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 141547839 + ... + 141548481.

It is an arithmetic number, because the mean of its divisors is an integer number (628510995).

Almost surely, 2^91015466880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91015466880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160898814720).

91015466880 is an abundant number, since it is smaller than the sum of its proper divisors (230782162560).

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

91015466880 is a wasteful number, since it uses less digits than its factorization.

91015466880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 91015466880 in words is "ninety-one billion, fifteen million, four hundred sixty-six thousand, eight hundred eighty".