515515232230 has 32 divisors (see below), whose sum is σ = 935406385056. Its totient is φ = 204550316544.

The previous prime is 515515232207. The next prime is 515515232257. The reversal of 515515232230 is 32232515515.

It is a super-2 number, since 2×515515232230² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275637 + ... + 1052143.

It is an arithmetic number, because the mean of its divisors is an integer number (29231449533).

Almost surely, 2^515515232230 is an apocalyptic number.

515515232230 is a deficient number, since it is larger than the sum of its proper divisors (419891152826).

515515232230 is a wasteful number, since it uses less digits than its factorization.

515515232230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777048.

The product of its (nonzero) digits is 45000, while the sum is 34.

Adding to 515515232230 its reverse (32232515515), we get a palindrome (547747747745).

The spelling of 515515232230 in words is "five hundred fifteen billion, five hundred fifteen million, two hundred thirty-two thousand, two hundred thirty".