515552220164 has 12 divisors (see below), whose sum is σ = 910200601884. Its totient is φ = 255494905344.

The previous prime is 515552220151. The next prime is 515552220173. The reversal of 515552220164 is 461022255515.

It can be written as a sum of positive squares in 2 ways, for example, as 21986958400 + 493565261764 = 148280^2 + 702542^2 .

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, 570300677 + ... + 570301580.

It is an arithmetic number, because the mean of its divisors is an integer number (75850050157).

Almost surely, 2^515552220164 is an apocalyptic number.

It is an amenable number.

515552220164 is a deficient number, since it is larger than the sum of its proper divisors (394648381720).

515552220164 is a wasteful number, since it uses less digits than its factorization.

515552220164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140602374 (or 1140602372 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 515552220164 its reverse (461022255515), we get a palindrome (976574475679).

The spelling of 515552220164 in words is "five hundred fifteen billion, five hundred fifty-two million, two hundred twenty thousand, one hundred sixty-four".