91744047120 has 160 divisors (see below), whose sum is σ = 310390383744. Its totient is φ = 22231756800.

The previous prime is 91744047089. The next prime is 91744047127. The reversal of 91744047120 is 2174044719.

It is not an unprimeable number, because it can be changed into a prime (91744047127) 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, 8075364 + ... + 8086716.

Almost surely, 2^91744047120 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 91744047120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155195191872).

91744047120 is an abundant number, since it is smaller than the sum of its proper divisors (218646336624).

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

91744047120 is a wasteful number, since it uses less digits than its factorization.

91744047120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14441 (or 14435 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 91744047120 in words is "ninety-one billion, seven hundred forty-four million, forty-seven thousand, one hundred twenty".