43240112515 has 4 divisors (see below), whose sum is σ = 51888135024. Its totient is φ = 34592090008.

The previous prime is 43240112491. The next prime is 43240112521. The reversal of 43240112515 is 51521104234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51521104234 = 2 ⋅25760552117.

It is a cyclic number.

It is not a de Polignac number, because 43240112515 - 2³³ = 34650177923 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4324011247 + ... + 4324011256.

It is an arithmetic number, because the mean of its divisors is an integer number (12972033756).

Almost surely, 2^43240112515 is an apocalyptic number.

43240112515 is a deficient number, since it is larger than the sum of its proper divisors (8648022509).

43240112515 is an equidigital number, since it uses as much as digits as its factorization.

43240112515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8648022508.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 43240112515 its reverse (51521104234), we get a palindrome (94761216749).

The spelling of 43240112515 in words is "forty-three billion, two hundred forty million, one hundred twelve thousand, five hundred fifteen".