544401432161 has 4 divisors (see below), whose sum is σ = 544403085312. Its totient is φ = 544399779012.

The previous prime is 544401432143. The next prime is 544401432209. The reversal of 544401432161 is 161234104445.

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 not a de Polignac number, because 544401432161 - 2³⁸ = 269523525217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544401432121) 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, 145601 + ... + 1053566.

It is an arithmetic number, because the mean of its divisors is an integer number (136100771328).

Almost surely, 2^544401432161 is an apocalyptic number.

It is an amenable number.

544401432161 is a deficient number, since it is larger than the sum of its proper divisors (1653151).

544401432161 is a wasteful number, since it uses less digits than its factorization.

544401432161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653150.

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 544401432161 in words is "five hundred forty-four billion, four hundred one million, four hundred thirty-two thousand, one hundred sixty-one".