91472945424 has 160 divisors (see below), whose sum is σ = 274896691200. Its totient is φ = 25670131200.

The previous prime is 91472945419. The next prime is 91472945441. The reversal of 91472945424 is 42454927419.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6457902 + ... + 6472050.

It is an arithmetic number, because the mean of its divisors is an integer number (1718104320).

Almost surely, 2^91472945424 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 91472945424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137448345600).

91472945424 is an abundant number, since it is smaller than the sum of its proper divisors (183423745776).

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

91472945424 is a wasteful number, since it uses less digits than its factorization.

91472945424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14509 (or 14503 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The spelling of 91472945424 in words is "ninety-one billion, four hundred seventy-two million, nine hundred forty-five thousand, four hundred twenty-four".