538888651787077 has 4 divisors (see below), whose sum is σ = 538892612330380. Its totient is φ = 538884691243776.

The previous prime is 538888651787053. The next prime is 538888651787111. The reversal of 538888651787077 is 770787156888835.

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

It can be written as a sum of positive squares in 2 ways, for example, as 173393748424836 + 365494903362241 = 13167906^2 + 19117921^2 .

It is a cyclic number.

It is not a de Polignac number, because 538888651787077 - 2³¹ = 538886504303429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538888651787477) 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, 1980067548 + ... + 1980339685.

It is an arithmetic number, because the mean of its divisors is an integer number (134723153082595).

Almost surely, 2^{538888651787077} is an apocalyptic number.

It is an amenable number.

538888651787077 is a deficient number, since it is larger than the sum of its proper divisors (3960543303).

538888651787077 is a wasteful number, since it uses less digits than its factorization.

538888651787077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960543302.

The product of its (nonzero) digits is 35404185600, while the sum is 88.

The spelling of 538888651787077 in words is "five hundred thirty-eight trillion, eight hundred eighty-eight billion, six hundred fifty-one million, seven hundred eighty-seven thousand, seventy-seven".