5211744661 has 8 divisors (see below), whose sum is σ = 5228748800. Its totient is φ = 5194763280.

The previous prime is 5211744641. The next prime is 5211744677. The reversal of 5211744661 is 1664471125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5211744661 - 2²⁵ = 5178190229 is a prime.

It is a super-2 number, since 2×5211744661² = 54324564822924009842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5211744661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211744641) 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 7 ways as a sum of consecutive naturals, for example, 533620 + ... + 543298.

It is an arithmetic number, because the mean of its divisors is an integer number (653593600).

Almost surely, 2^5211744661 is an apocalyptic number.

It is an amenable number.

5211744661 is a deficient number, since it is larger than the sum of its proper divisors (17004139).

5211744661 is a wasteful number, since it uses less digits than its factorization.

5211744661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11379.

The product of its digits is 40320, while the sum is 37.

The square root of 5211744661 is about 72192.4141513497. The cubic root of 5211744661 is about 1733.7815484823.

The spelling of 5211744661 in words is "five billion, two hundred eleven million, seven hundred forty-four thousand, six hundred sixty-one".