5121810812 has 24 divisors (see below), whose sum is σ = 9078426000. Its totient is φ = 2528024576.

The previous prime is 5121810751. The next prime is 5121810823. The reversal of 5121810812 is 2180181215.

It is a congruent 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, 462314 + ... + 473262.

It is an arithmetic number, because the mean of its divisors is an integer number (378267750).

Almost surely, 2^5121810812 is an apocalyptic number.

It is an amenable number.

5121810812 is a deficient number, since it is larger than the sum of its proper divisors (3956615188).

5121810812 is a wasteful number, since it uses less digits than its factorization.

5121810812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12445 (or 12443 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 29.

The square root of 5121810812 is about 71566.8275949130. The cubic root of 5121810812 is about 1723.7509195439.

The spelling of 5121810812 in words is "five billion, one hundred twenty-one million, eight hundred ten thousand, eight hundred twelve".