91270727680 has 192 divisors, whose sum is σ = 239634158400. Its totient is φ = 33088143360.

The previous prime is 91270727629. The next prime is 91270727687. The reversal of 91270727680 is 8672707219.

It is not an unprimeable number, because it can be changed into a prime (91270727687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43815919 + ... + 43818001.

It is an arithmetic number, because the mean of its divisors is an integer number (1248094575).

Almost surely, 2^91270727680 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 91270727680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119817079200).

91270727680 is an abundant number, since it is smaller than the sum of its proper divisors (148363430720).

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

91270727680 is a wasteful number, since it uses less digits than its factorization.

91270727680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 91270727680 in words is "ninety-one billion, two hundred seventy million, seven hundred twenty-seven thousand, six hundred eighty".