5121204664 has 16 divisors (see below), whose sum is σ = 9608481000. Its totient is φ = 2558943072.

The previous prime is 5121204637. The next prime is 5121204667. The reversal of 5121204664 is 4664021215.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121204667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194242 + ... + 219025.

Almost surely, 2^5121204664 is an apocalyptic number.

It is an amenable number.

5121204664 is a deficient number, since it is larger than the sum of its proper divisors (4487276336).

5121204664 is a wasteful number, since it uses less digits than its factorization.

5121204664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414822 (or 414818 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 5121204664 is about 71562.5926305077. The cubic root of 5121204664 is about 1723.6829169415.

Adding to 5121204664 its reverse (4664021215), we get a palindrome (9785225879).

The spelling of 5121204664 in words is "five billion, one hundred twenty-one million, two hundred four thousand, six hundred sixty-four".