515151506656 has 24 divisors (see below), whose sum is σ = 1016759225160. Its totient is φ = 256926941568.

The previous prime is 515151506627. The next prime is 515151506759. The reversal of 515151506656 is 656605151515.

It is a happy number.

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, 20262466 + ... + 20287873.

It is an arithmetic number, because the mean of its divisors is an integer number (42364967715).

Almost surely, 2^515151506656 is an apocalyptic number.

It is an amenable number.

515151506656 is a deficient number, since it is larger than the sum of its proper divisors (501607718504).

515151506656 is a wasteful number, since it uses less digits than its factorization.

515151506656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40550746 (or 40550738 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 515151506656 in words is "five hundred fifteen billion, one hundred fifty-one million, five hundred six thousand, six hundred fifty-six".