5712100726721 has 4 divisors (see below), whose sum is σ = 5712350175444. Its totient is φ = 5711851278000.

The previous prime is 5712100726699. The next prime is 5712100726723. The reversal of 5712100726721 is 1276270012175.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3792113602225 + 1919987124496 = 1947335^2 + 1385636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5712100726721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5712100726723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124690010 + ... + 124735811.

It is an arithmetic number, because the mean of its divisors is an integer number (1428087543861).

Almost surely, 2^{5712100726721} is an apocalyptic number.

It is an amenable number.

5712100726721 is a deficient number, since it is larger than the sum of its proper divisors (249448723).

5712100726721 is a wasteful number, since it uses less digits than its factorization.

5712100726721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249448722.

The product of its (nonzero) digits is 82320, while the sum is 41.

Adding to 5712100726721 its reverse (1276270012175), we get a palindrome (6988370738896).

The spelling of 5712100726721 in words is "five trillion, seven hundred twelve billion, one hundred million, seven hundred twenty-six thousand, seven hundred twenty-one".