515155231340004 has 24 divisors (see below), whose sum is σ = 1211493667406848. Its totient is φ = 170366296978080.

The previous prime is 515155231339963. The next prime is 515155231340021. The reversal of 515155231340004 is 400043132551515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169014181987 + ... + 169014185034.

Almost surely, 2^{515155231340004} is an apocalyptic number.

It is an amenable number.

515155231340004 is an abundant number, since it is smaller than the sum of its proper divisors (696338436066844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515155231340004 is a wasteful number, since it uses less digits than its factorization.

515155231340004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338028367155 (or 338028367153 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

Adding to 515155231340004 its reverse (400043132551515), we get a palindrome (915198363891519).

The spelling of 515155231340004 in words is "five hundred fifteen trillion, one hundred fifty-five billion, two hundred thirty-one million, three hundred forty thousand, four".