538769952881 has 2 divisors, whose sum is σ = 538769952882. Its totient is φ = 538769952880.

The previous prime is 538769952821. The next prime is 538769952893. The reversal of 538769952881 is 188259967835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396496902400 + 142273050481 = 629680^2 + 377191^2 .

It is a cyclic number.

It is not a de Polignac number, because 538769952881 - 2¹⁰ = 538769951857 is a prime.

It is a super-2 number, since 2×538769952881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (538769952821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269384976440 + 269384976441.

It is an arithmetic number, because the mean of its divisors is an integer number (269384976441).

Almost surely, 2^538769952881 is an apocalyptic number.

It is an amenable number.

538769952881 is a deficient number, since it is larger than the sum of its proper divisors (1).

538769952881 is an equidigital number, since it uses as much as digits as its factorization.

538769952881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 261273600, while the sum is 71.

The spelling of 538769952881 in words is "five hundred thirty-eight billion, seven hundred sixty-nine million, nine hundred fifty-two thousand, eight hundred eighty-one".