515216012 has 6 divisors (see below), whose sum is σ = 901628028. Its totient is φ = 257608004.

The previous prime is 515215993. The next prime is 515216017. The reversal of 515216012 is 210612515.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (515216017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64401998 + ... + 64402005.

It is an arithmetic number, because the mean of its divisors is an integer number (150271338).

Almost surely, 2^515216012 is an apocalyptic number.

It is an amenable number.

515216012 is a deficient number, since it is larger than the sum of its proper divisors (386412016).

515216012 is a wasteful number, since it uses less digits than its factorization.

515216012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128804007 (or 128804005 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 515216012 is about 22698.3702498660. The cubic root of 515216012 is about 801.6715113798.

Adding to 515216012 its reverse (210612515), we get a palindrome (725828527).

The spelling of 515216012 in words is "five hundred fifteen million, two hundred sixteen thousand, twelve".