5711928821 has 4 divisors (see below), whose sum is σ = 6047924652. Its totient is φ = 5375932992.

The previous prime is 5711928809. The next prime is 5711928877. The reversal of 5711928821 is 1288291175.

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 5214861796 + 497067025 = 72214^2 + 22295^2 .

It is a cyclic number.

It is not a de Polignac number, because 5711928821 - 2¹⁸ = 5711666677 is a prime.

It is a super-2 number, since 2×5711928821² = 65252261712340900082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5711928881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167997890 + ... + 167997923.

It is an arithmetic number, because the mean of its divisors is an integer number (1511981163).

Almost surely, 2^5711928821 is an apocalyptic number.

It is an amenable number.

5711928821 is a deficient number, since it is larger than the sum of its proper divisors (335995831).

5711928821 is a wasteful number, since it uses less digits than its factorization.

5711928821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335995830.

The product of its digits is 80640, while the sum is 44.

The square root of 5711928821 is about 75577.3036102771. The cubic root of 5711928821 is about 1787.5612389472.

The spelling of 5711928821 in words is "five billion, seven hundred eleven million, nine hundred twenty-eight thousand, eight hundred twenty-one".