54611243221543 has 2 divisors, whose sum is σ = 54611243221544. Its totient is φ = 54611243221542.

The previous prime is 54611243221481. The next prime is 54611243221607. The reversal of 54611243221543 is 34512234211645.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54611243221543 - 2²⁹ = 54610706350631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54611243221543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54611243224543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27305621610771 + 27305621610772.

It is an arithmetic number, because the mean of its divisors is an integer number (27305621610772).

Almost surely, 2^{54611243221543} is an apocalyptic number.

54611243221543 is a deficient number, since it is larger than the sum of its proper divisors (1).

54611243221543 is an equidigital number, since it uses as much as digits as its factorization.

54611243221543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 43.

The spelling of 54611243221543 in words is "fifty-four trillion, six hundred eleven billion, two hundred forty-three million, two hundred twenty-one thousand, five hundred forty-three".