516823177928 has 36 divisors (see below), whose sum is σ = 972944083665. Its totient is φ = 257375587968.

The previous prime is 516823177921. The next prime is 516823177931. The reversal of 516823177928 is 829771328615.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 421489205284 + 95333972644 = 649222^2 + 308762^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=508342.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516823177921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 880448051 + ... + 880448637.

Almost surely, 2^516823177928 is an apocalyptic number.

It is an amenable number.

516823177928 is a deficient number, since it is larger than the sum of its proper divisors (456120905737).

516823177928 is an frugal number, since it uses more digits than its factorization.

516823177928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046 (or 1022 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 59.

The spelling of 516823177928 in words is "five hundred sixteen billion, eight hundred twenty-three million, one hundred seventy-seven thousand, nine hundred twenty-eight".