5126011865 has 32 divisors (see below), whose sum is σ = 6799264416. Its totient is φ = 3686492160.

The previous prime is 5126011861. The next prime is 5126011867. The reversal of 5126011865 is 5681106215.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 1420611481 + 3705400384 = 37691^2 + 60872^2 .

It is not a de Polignac number, because 5126011865 - 2² = 5126011861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5126011861) 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 31 ways as a sum of consecutive naturals, for example, 466535 + ... + 477395.

It is an arithmetic number, because the mean of its divisors is an integer number (212477013).

Almost surely, 2^5126011865 is an apocalyptic number.

It is an amenable number.

5126011865 is a deficient number, since it is larger than the sum of its proper divisors (1673252551).

5126011865 is a wasteful number, since it uses less digits than its factorization.

5126011865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11069.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 5126011865 is about 71596.1721392981. The cubic root of 5126011865 is about 1724.2220803779. Note that the first 3 decimals are identical.

The spelling of 5126011865 in words is "five billion, one hundred twenty-six million, eleven thousand, eight hundred sixty-five".