54404442561 has 32 divisors (see below), whose sum is σ = 83149056000. Its totient is φ = 30995743104.

The previous prime is 54404442553. The next prime is 54404442629. The reversal of 54404442561 is 16524440445.

It is not a de Polignac number, because 54404442561 - 2³ = 54404442553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54404442061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15014596 + ... + 15018218.

It is an arithmetic number, because the mean of its divisors is an integer number (2598408000).

Almost surely, 2^54404442561 is an apocalyptic number.

It is an amenable number.

54404442561 is a deficient number, since it is larger than the sum of its proper divisors (28744613439).

54404442561 is a wasteful number, since it uses less digits than its factorization.

54404442561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565.

The product of its (nonzero) digits is 307200, while the sum is 39.

The spelling of 54404442561 in words is "fifty-four billion, four hundred four million, four hundred forty-two thousand, five hundred sixty-one".