54645444454639 has 2 divisors, whose sum is σ = 54645444454640. Its totient is φ = 54645444454638.

The previous prime is 54645444454637. The next prime is 54645444454663. The reversal of 54645444454639 is 93645444454645.

54645444454639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54645444454639 - 2¹ = 54645444454637 is a prime.

It is a super-2 number, since 2×54645444454639² (a number of 28 digits) contains 22 as substring.

Together with 54645444454637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54645444454631) 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 as a sum of consecutive naturals, namely, 27322722227319 + 27322722227320.

It is an arithmetic number, because the mean of its divisors is an integer number (27322722227320).

Almost surely, 2^{54645444454639} is an apocalyptic number.

54645444454639 is a deficient number, since it is larger than the sum of its proper divisors (1).

54645444454639 is an equidigital number, since it uses as much as digits as its factorization.

54645444454639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656000, while the sum is 67.

The spelling of 54645444454639 in words is "fifty-four trillion, six hundred forty-five billion, four hundred forty-four million, four hundred fifty-four thousand, six hundred thirty-nine".