5121435656 has 16 divisors (see below), whose sum is σ = 9603498240. Its totient is φ = 2560502800.

The previous prime is 5121435647. The next prime is 5121435659. The reversal of 5121435656 is 6565341215.

It is not an unprimeable number, because it can be changed into a prime (5121435659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124481 + ... + 160431.

It is an arithmetic number, because the mean of its divisors is an integer number (600218640).

Almost surely, 2^5121435656 is an apocalyptic number.

It is an amenable number.

5121435656 is a deficient number, since it is larger than the sum of its proper divisors (4482062584).

5121435656 is a wasteful number, since it uses less digits than its factorization.

5121435656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53764 (or 53760 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 5121435656 is about 71564.2065281241. The cubic root of 5121435656 is about 1723.7088321316.

The spelling of 5121435656 in words is "five billion, one hundred twenty-one million, four hundred thirty-five thousand, six hundred fifty-six".