54040213543 has 2 divisors, whose sum is σ = 54040213544. Its totient is φ = 54040213542.

The previous prime is 54040213541. The next prime is 54040213561. The reversal of 54040213543 is 34531204045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54040213543 - 2¹ = 54040213541 is a prime.

It is a super-2 number, since 2×54040213543² (a number of 22 digits) contains 22 as substring.

Together with 54040213541, 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 (54040213541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27020106771 + 27020106772.

It is an arithmetic number, because the mean of its divisors is an integer number (27020106772).

Almost surely, 2^54040213543 is an apocalyptic number.

54040213543 is a deficient number, since it is larger than the sum of its proper divisors (1).

54040213543 is an equidigital number, since it uses as much as digits as its factorization.

54040213543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 54040213543 its reverse (34531204045), we get a palindrome (88571417588).

The spelling of 54040213543 in words is "fifty-four billion, forty million, two hundred thirteen thousand, five hundred forty-three".