43643342401 has 4 divisors (see below), whose sum is σ = 44075454804. Its totient is φ = 43211230000.

The previous prime is 43643342383. The next prime is 43643342411. The reversal of 43643342401 is 10424334634.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39563199025 + 4080143376 = 198905^2 + 63876^2 .

It is a cyclic number.

It is not a de Polignac number, because 43643342401 - 2²⁹ = 43106471489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43643342411) 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, 216056050 + ... + 216056251.

It is an arithmetic number, because the mean of its divisors is an integer number (11018863701).

Almost surely, 2^43643342401 is an apocalyptic number.

It is an amenable number.

43643342401 is a deficient number, since it is larger than the sum of its proper divisors (432112403).

43643342401 is a wasteful number, since it uses less digits than its factorization.

43643342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432112402.

The product of its (nonzero) digits is 82944, while the sum is 34.

The spelling of 43643342401 in words is "forty-three billion, six hundred forty-three million, three hundred forty-two thousand, four hundred one".