54045444561 has 16 divisors (see below), whose sum is σ = 72173713920. Its totient is φ = 35973780480.

The previous prime is 54045444521. The next prime is 54045444569. The reversal of 54045444561 is 16544454045.

It is a happy number.

It is not a de Polignac number, because 54045444561 - 2¹¹ = 54045442513 is a prime.

It is a super-2 number, since 2×54045444561² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54045444569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6860721 + ... + 6868593.

It is an arithmetic number, because the mean of its divisors is an integer number (4510857120).

Almost surely, 2^54045444561 is an apocalyptic number.

It is an amenable number.

54045444561 is a deficient number, since it is larger than the sum of its proper divisors (18128269359).

54045444561 is a wasteful number, since it uses less digits than its factorization.

54045444561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11176.

The product of its (nonzero) digits is 768000, while the sum is 42.

The spelling of 54045444561 in words is "fifty-four billion, forty-five million, four hundred forty-four thousand, five hundred sixty-one".