43351404121 has 4 divisors (see below), whose sum is σ = 44749836544. Its totient is φ = 41952971700.

The previous prime is 43351404097. The next prime is 43351404143. The reversal of 43351404121 is 12140415334.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12140415334 = 2 ⋅6070207667.

It is a cyclic number.

It is not a de Polignac number, because 43351404121 - 2⁷ = 43351403993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43351404121.

It is not an unprimeable number, because it can be changed into a prime (43351404191) 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, 699216165 + ... + 699216226.

It is an arithmetic number, because the mean of its divisors is an integer number (11187459136).

Almost surely, 2^43351404121 is an apocalyptic number.

It is an amenable number.

43351404121 is a deficient number, since it is larger than the sum of its proper divisors (1398432423).

43351404121 is a wasteful number, since it uses less digits than its factorization.

43351404121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398432422.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 43351404121 its reverse (12140415334), we get a palindrome (55491819455).

The spelling of 43351404121 in words is "forty-three billion, three hundred fifty-one million, four hundred four thousand, one hundred twenty-one".