538921777329 has 64 divisors (see below), whose sum is σ = 897604485120. Its totient is φ = 317082427200.

The previous prime is 538921777297. The next prime is 538921777363. The reversal of 538921777329 is 923777129835.

538921777329 is a `hidden beast` number, since 5 + 389 + 217 + 7 + 7 + 32 + 9 = 666.

It is not a de Polignac number, because 538921777329 - 2⁵ = 538921777297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (538921777369) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19547104 + ... + 19574654.

It is an arithmetic number, because the mean of its divisors is an integer number (14025070080).

Almost surely, 2^538921777329 is an apocalyptic number.

It is an amenable number.

538921777329 is a deficient number, since it is larger than the sum of its proper divisors (358682707791).

538921777329 is a wasteful number, since it uses less digits than its factorization.

538921777329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30019 (or 30013 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 63.

The spelling of 538921777329 in words is "five hundred thirty-eight billion, nine hundred twenty-one million, seven hundred seventy-seven thousand, three hundred twenty-nine".