43112112861 has 4 divisors (see below), whose sum is σ = 57482817152. Its totient is φ = 28741408572.

The previous prime is 43112112833. The next prime is 43112112871. The reversal of 43112112861 is 16821121134.

43112112861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43112112861 - 2¹⁰ = 43112111837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43112112871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7185352141 + ... + 7185352146.

It is an arithmetic number, because the mean of its divisors is an integer number (14370704288).

Almost surely, 2^43112112861 is an apocalyptic number.

It is an amenable number.

43112112861 is a deficient number, since it is larger than the sum of its proper divisors (14370704291).

43112112861 is a wasteful number, since it uses less digits than its factorization.

43112112861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14370704290.

The product of its digits is 2304, while the sum is 30.

Adding to 43112112861 its reverse (16821121134), we get a palindrome (59933233995).

The spelling of 43112112861 in words is "forty-three billion, one hundred twelve million, one hundred twelve thousand, eight hundred sixty-one".