43112039969 has 4 divisors (see below), whose sum is σ = 43153061040. Its totient is φ = 43071018900.

The previous prime is 43112039917. The next prime is 43112039989. The reversal of 43112039969 is 96993021134.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43112039969 is a prime.

It is a super-2 number, since 2×43112039969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43112039989) 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, 20508959 + ... + 20511060.

It is an arithmetic number, because the mean of its divisors is an integer number (10788265260).

Almost surely, 2^43112039969 is an apocalyptic number.

It is an amenable number.

43112039969 is a deficient number, since it is larger than the sum of its proper divisors (41021071).

43112039969 is a wasteful number, since it uses less digits than its factorization.

43112039969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41021070.

The product of its (nonzero) digits is 314928, while the sum is 47.

The spelling of 43112039969 in words is "forty-three billion, one hundred twelve million, thirty-nine thousand, nine hundred sixty-nine".