666060517222 has 4 divisors (see below), whose sum is σ = 999090775836. Its totient is φ = 333030258610.

The previous prime is 666060517211. The next prime is 666060517273. The reversal of 666060517222 is 222715060666.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×666060517222² (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 as a sum of consecutive naturals, namely, 166515129304 + ... + 166515129307.

It is an arithmetic number, because the mean of its divisors is an integer number (249772693959).

Almost surely, 2^666060517222 is an apocalyptic number.

666060517222 is a deficient number, since it is larger than the sum of its proper divisors (333030258614).

666060517222 is a wasteful number, since it uses less digits than its factorization.

666060517222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333030258613.

The product of its (nonzero) digits is 362880, while the sum is 43.

Adding to 666060517222 its reverse (222715060666), we get a palindrome (888775577888).

The spelling of 666060517222 in words is "six hundred sixty-six billion, sixty million, five hundred seventeen thousand, two hundred twenty-two".