54128518259 has 4 divisors (see below), whose sum is σ = 54129181704. Its totient is φ = 54127854816.

The previous prime is 54128518253. The next prime is 54128518307. The reversal of 54128518259 is 95281582145.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54128518259 is a prime.

It is a super-3 number, since 3×54128518259³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54128518253) 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, 188822 + ... + 379355.

It is an arithmetic number, because the mean of its divisors is an integer number (13532295426).

Almost surely, 2^54128518259 is an apocalyptic number.

54128518259 is a deficient number, since it is larger than the sum of its proper divisors (663445).

54128518259 is an equidigital number, since it uses as much as digits as its factorization.

54128518259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663444.

The product of its digits is 1152000, while the sum is 50.

The spelling of 54128518259 in words is "fifty-four billion, one hundred twenty-eight million, five hundred eighteen thousand, two hundred fifty-nine".