54240402839 has 4 divisors (see below), whose sum is σ = 61989031824. Its totient is φ = 46491773856.

The previous prime is 54240402833. The next prime is 54240402857. The reversal of 54240402839 is 93820404245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54240402839 - 2⁸ = 54240402583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54240402796 and 54240402805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54240402833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3874314482 + ... + 3874314495.

It is an arithmetic number, because the mean of its divisors is an integer number (15497257956).

Almost surely, 2^54240402839 is an apocalyptic number.

54240402839 is a deficient number, since it is larger than the sum of its proper divisors (7748628985).

54240402839 is an equidigital number, since it uses as much as digits as its factorization.

54240402839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7748628984.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 54240402839 in words is "fifty-four billion, two hundred forty million, four hundred two thousand, eight hundred thirty-nine".