54428260639 has 4 divisors (see below), whose sum is σ = 54704546424. Its totient is φ = 54151974856.

The previous prime is 54428260577. The next prime is 54428260657. The reversal of 54428260639 is 93606282445.

It is a happy number.

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 54428260639 - 2¹³ = 54428252447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54428260592 and 54428260601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54428200639) 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 in 3 ways as a sum of consecutive naturals, for example, 138142597 + ... + 138142990.

It is an arithmetic number, because the mean of its divisors is an integer number (13676136606).

Almost surely, 2^54428260639 is an apocalyptic number.

54428260639 is a deficient number, since it is larger than the sum of its proper divisors (276285785).

54428260639 is a wasteful number, since it uses less digits than its factorization.

54428260639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276285784.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 54428260639 in words is "fifty-four billion, four hundred twenty-eight million, two hundred sixty thousand, six hundred thirty-nine".