538888388887 has 4 divisors (see below), whose sum is σ = 553452939976. Its totient is φ = 524323837800.

The previous prime is 538888388833. The next prime is 538888388921. The reversal of 538888388887 is 788883888835.

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 538888388887 - 2¹⁵ = 538888356119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 538888388887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538888388587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7282275489 + ... + 7282275562.

It is an arithmetic number, because the mean of its divisors is an integer number (138363234994).

Almost surely, 2^538888388887 is an apocalyptic number.

538888388887 is a deficient number, since it is larger than the sum of its proper divisors (14564551089).

538888388887 is a wasteful number, since it uses less digits than its factorization.

538888388887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14564551088.

The product of its digits is 5284823040, while the sum is 82.

The spelling of 538888388887 in words is "five hundred thirty-eight billion, eight hundred eighty-eight million, three hundred eighty-eight thousand, eight hundred eighty-seven".