43091197240 has 128 divisors (see below), whose sum is σ = 119435420160. Its totient is φ = 13625547264.

The previous prime is 43091197213. The next prime is 43091197249. The reversal of 43091197240 is 4279119034.

43091197240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 43091197193 and 43091197202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43091197249) 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, 4665507 + ... + 4674733.

It is an arithmetic number, because the mean of its divisors is an integer number (933089220).

Almost surely, 2^43091197240 is an apocalyptic number.

43091197240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43091197240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59717710080).

43091197240 is an abundant number, since it is smaller than the sum of its proper divisors (76344222920).

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

43091197240 is a wasteful number, since it uses less digits than its factorization.

43091197240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10541 (or 10537 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 43091197240 in words is "forty-three billion, ninety-one million, one hundred ninety-seven thousand, two hundred forty".