43261237615 has 4 divisors (see below), whose sum is σ = 51913485144. Its totient is φ = 34608990088.

The previous prime is 43261237603. The next prime is 43261237687. The reversal of 43261237615 is 51673216234.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43261237615 - 2¹⁷ = 43261106543 is a prime.

It is a Duffinian number.

It is a congruent 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, 4326123757 + ... + 4326123766.

It is an arithmetic number, because the mean of its divisors is an integer number (12978371286).

Almost surely, 2^43261237615 is an apocalyptic number.

43261237615 is a deficient number, since it is larger than the sum of its proper divisors (8652247529).

43261237615 is an equidigital number, since it uses as much as digits as its factorization.

43261237615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8652247528.

The product of its digits is 181440, while the sum is 40.

The spelling of 43261237615 in words is "forty-three billion, two hundred sixty-one million, two hundred thirty-seven thousand, six hundred fifteen".