43201661422561 has 8 divisors (see below), whose sum is σ = 45476908779200. Its totient is φ = 40926561636240.

The previous prime is 43201661422531. The next prime is 43201661422583. The reversal of 43201661422561 is 16522416610234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43201661422561 - 2⁵ = 43201661422529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43201661422531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36291405 + ... + 37462906.

It is an arithmetic number, because the mean of its divisors is an integer number (5684613597400).

Almost surely, 2^{43201661422561} is an apocalyptic number.

It is an amenable number.

43201661422561 is a deficient number, since it is larger than the sum of its proper divisors (2275247356639).

43201661422561 is a wasteful number, since it uses less digits than its factorization.

43201661422561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73785159.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 43201661422561 in words is "forty-three trillion, two hundred one billion, six hundred sixty-one million, four hundred twenty-two thousand, five hundred sixty-one".