91435944432 has 160 divisors (see below), whose sum is σ = 288055928320. Its totient is φ = 24410419200.

The previous prime is 91435944427. The next prime is 91435944433. The reversal of 91435944432 is 23444953419.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91435944433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367932 + ... + 564132.

It is an arithmetic number, because the mean of its divisors is an integer number (1800349552).

Almost surely, 2^91435944432 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 91435944432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144027964160).

91435944432 is an abundant number, since it is smaller than the sum of its proper divisors (196619983888).

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

91435944432 is a wasteful number, since it uses less digits than its factorization.

91435944432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196311 (or 196305 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 48.

The spelling of 91435944432 in words is "ninety-one billion, four hundred thirty-five million, nine hundred forty-four thousand, four hundred thirty-two".