43981875137 has 8 divisors (see below), whose sum is σ = 44058247680. Its totient is φ = 43905536640.

The previous prime is 43981875131. The next prime is 43981875151. The reversal of 43981875137 is 73157818934.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43981875137 - 2⁶ = 43981875073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43981875131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4678712 + ... + 4688102.

It is an arithmetic number, because the mean of its divisors is an integer number (5507280960).

Almost surely, 2^43981875137 is an apocalyptic number.

It is an amenable number.

43981875137 is a deficient number, since it is larger than the sum of its proper divisors (76372543).

43981875137 is an equidigital number, since it uses as much as digits as its factorization.

43981875137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17023.

The product of its digits is 5080320, while the sum is 56.

The spelling of 43981875137 in words is "forty-three billion, nine hundred eighty-one million, eight hundred seventy-five thousand, one hundred thirty-seven".