54239539643 has 2 divisors, whose sum is σ = 54239539644. Its totient is φ = 54239539642.

The previous prime is 54239539621. The next prime is 54239539727. The reversal of 54239539643 is 34693593245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54239539643 - 2¹⁴ = 54239523259 is a prime.

It is not a weakly prime, because it can be changed into another prime (54239539243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27119769821 + 27119769822.

It is an arithmetic number, because the mean of its divisors is an integer number (27119769822).

Almost surely, 2^54239539643 is an apocalyptic number.

54239539643 is a deficient number, since it is larger than the sum of its proper divisors (1).

54239539643 is an equidigital number, since it uses as much as digits as its factorization.

54239539643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10497600, while the sum is 53.

The spelling of 54239539643 in words is "fifty-four billion, two hundred thirty-nine million, five hundred thirty-nine thousand, six hundred forty-three".