5200129157668 has 6 divisors (see below), whose sum is σ = 9100226025926. Its totient is φ = 2600064578832.

The previous prime is 5200129157623. The next prime is 5200129157669. The reversal of 5200129157668 is 8667519210025.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4938181728804 + 261947428864 = 2222202^2 + 511808^2 .

It is not an unprimeable number, because it can be changed into a prime (5200129157669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650016144705 + ... + 650016144712.

Almost surely, 2^{5200129157668} is an apocalyptic number.

It is an amenable number.

5200129157668 is a deficient number, since it is larger than the sum of its proper divisors (3900096868258).

5200129157668 is a wasteful number, since it uses less digits than its factorization.

5200129157668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300032289421 (or 1300032289419 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 5200129157668 in words is "five trillion, two hundred billion, one hundred twenty-nine million, one hundred fifty-seven thousand, six hundred sixty-eight".