54642218387 has 2 divisors, whose sum is σ = 54642218388. Its totient is φ = 54642218386.

The previous prime is 54642218321. The next prime is 54642218413. The reversal of 54642218387 is 78381224645.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54642218387 is a prime.

It is not a weakly prime, because it can be changed into another prime (54642218887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27321109193 + 27321109194.

It is an arithmetic number, because the mean of its divisors is an integer number (27321109194).

Almost surely, 2^54642218387 is an apocalyptic number.

54642218387 is a deficient number, since it is larger than the sum of its proper divisors (1).

54642218387 is an equidigital number, since it uses as much as digits as its factorization.

54642218387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 50.

The spelling of 54642218387 in words is "fifty-four billion, six hundred forty-two million, two hundred eighteen thousand, three hundred eighty-seven".