43244979540 has 384 divisors, whose sum is σ = 146195546112. Its totient is φ = 9344471040.

The previous prime is 43244979521. The next prime is 43244979541. The reversal of 43244979540 is 4597944234.

It is a happy number.

It is a super-2 number, since 2×43244979540² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43244979541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 164429449 + ... + 164429711.

It is an arithmetic number, because the mean of its divisors is an integer number (380717568).

Almost surely, 2^43244979540 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 43244979540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73097773056).

43244979540 is an abundant number, since it is smaller than the sum of its proper divisors (102950566572).

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

43244979540 is a wasteful number, since it uses less digits than its factorization.

43244979540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 43244979540 in words is "forty-three billion, two hundred forty-four million, nine hundred seventy-nine thousand, five hundred forty".