515543220242 has 16 divisors (see below), whose sum is σ = 789801062400. Its totient is φ = 252276654048.

The previous prime is 515543220233. The next prime is 515543220253. The reversal of 515543220242 is 242022345515.

It is a happy number.

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, 2480303 + ... + 2680109.

It is an arithmetic number, because the mean of its divisors is an integer number (49362566400).

Almost surely, 2^515543220242 is an apocalyptic number.

515543220242 is a deficient number, since it is larger than the sum of its proper divisors (274257842158).

515543220242 is a wasteful number, since it uses less digits than its factorization.

515543220242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227305.

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

Adding to 515543220242 its reverse (242022345515), we get a palindrome (757565565757).

The spelling of 515543220242 in words is "five hundred fifteen billion, five hundred forty-three million, two hundred twenty thousand, two hundred forty-two".