515220205043042 has 16 divisors (see below), whose sum is σ = 780060852174240. Its totient is φ = 255199969327488.

The previous prime is 515220205042993. The next prime is 515220205043069. The reversal of 515220205043042 is 240340502022515.

It is a happy number.

It is a super-2 number, since 2×515220205043042² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 515220205042993 and 515220205043011.

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, 9368498 + ... + 33439634.

It is an arithmetic number, because the mean of its divisors is an integer number (48753803260890).

Almost surely, 2^{515220205043042} is an apocalyptic number.

515220205043042 is a deficient number, since it is larger than the sum of its proper divisors (264840647131198).

515220205043042 is a wasteful number, since it uses less digits than its factorization.

515220205043042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24171265.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 515220205043042 its reverse (240340502022515), we get a palindrome (755560707065557).

The spelling of 515220205043042 in words is "five hundred fifteen trillion, two hundred twenty billion, two hundred five million, forty-three thousand, forty-two".