91906712800 has 288 divisors, whose sum is σ = 262745683200. Its totient is φ = 31379443200.

The previous prime is 91906712773. The next prime is 91906712831. The reversal of 91906712800 is 821760919.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84240255 + ... + 84241345.

It is an arithmetic number, because the mean of its divisors is an integer number (912311400).

Almost surely, 2^91906712800 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 91906712800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131372841600).

91906712800 is an abundant number, since it is smaller than the sum of its proper divisors (170838970400).

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

91906712800 is a wasteful number, since it uses less digits than its factorization.

91906712800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 91906712800 in words is "ninety-one billion, nine hundred six million, seven hundred twelve thousand, eight hundred".