2054553446561 has 32 divisors (see below), whose sum is σ = 2646069805056. Its totient is φ = 1548182808000.

The previous prime is 2054553446527. The next prime is 2054553446563. The reversal of 2054553446561 is 1656443554502.

It is a cyclic number.

It is not a de Polignac number, because 2054553446561 - 2⁶ = 2054553446497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2054553446563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2984816 + ... + 3608078.

It is an arithmetic number, because the mean of its divisors is an integer number (82689681408).

Almost surely, 2^{2054553446561} is an apocalyptic number.

It is an amenable number.

2054553446561 is a deficient number, since it is larger than the sum of its proper divisors (591516358495).

2054553446561 is a wasteful number, since it uses less digits than its factorization.

2054553446561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624693.

The product of its (nonzero) digits is 8640000, while the sum is 50.

The spelling of 2054553446561 in words is "two trillion, fifty-four billion, five hundred fifty-three million, four hundred forty-six thousand, five hundred sixty-one".