516135402064 has 20 divisors (see below), whose sum is σ = 1000571375380. Its totient is φ = 257923434240.

The previous prime is 516135401993. The next prime is 516135402091. The reversal of 516135402064 is 460204531615.

It can be written as a sum of positive squares in 2 ways, for example, as 314451777600 + 201683624464 = 560760^2 + 449092^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8987157 + ... + 9044404.

It is an arithmetic number, because the mean of its divisors is an integer number (50028568769).

Almost surely, 2^516135402064 is an apocalyptic number.

It is an amenable number.

516135402064 is a deficient number, since it is larger than the sum of its proper divisors (484435973316).

516135402064 is a wasteful number, since it uses less digits than its factorization.

516135402064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18033358 (or 18033352 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 516135402064 its reverse (460204531615), we get a palindrome (976339933679).

The spelling of 516135402064 in words is "five hundred sixteen billion, one hundred thirty-five million, four hundred two thousand, sixty-four".