43443401402123 has 4 divisors (see below), whose sum is σ = 43471054746408. Its totient is φ = 43415748057840.

The previous prime is 43443401402113. The next prime is 43443401402131. The reversal of 43443401402123 is 32120410434434.

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 43443401402123 - 2¹⁴ = 43443401385739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43443401402113) 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, 13826669786 + ... + 13826672927.

It is an arithmetic number, because the mean of its divisors is an integer number (10867763686602).

Almost surely, 2^{43443401402123} is an apocalyptic number.

43443401402123 is a deficient number, since it is larger than the sum of its proper divisors (27653344285).

43443401402123 is a wasteful number, since it uses less digits than its factorization.

43443401402123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27653344284.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 43443401402123 its reverse (32120410434434), we get a palindrome (75563811836557).

The spelling of 43443401402123 in words is "forty-three trillion, four hundred forty-three billion, four hundred one million, four hundred two thousand, one hundred twenty-three".