5247109491649 has 9 divisors (see below), whose sum is σ = 5270848671361. Its totient is φ = 5223476783380.

The previous prime is 5247109491643. The next prime is 5247109491773. The reversal of 5247109491649 is 9461949017425.

The square root of 5247109491649 is 2290657.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 5247109491649 - 2³ = 5247109491641 is a prime.

It is a super-3 number, since 3×5247109491649³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5247109491641) 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 8 ways as a sum of consecutive naturals, for example, 519974094 + ... + 519984184.

Almost surely, 2^{5247109491649} is an apocalyptic number.

5247109491649 is the 2290657-th square number.

5247109491649 is the 1145329-th centered octagonal number.

It is an amenable number.

5247109491649 is a deficient number, since it is larger than the sum of its proper divisors (23739179712).

5247109491649 is an frugal number, since it uses more digits than its factorization.

5247109491649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20636 (or 10318 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 5247109491649 in words is "five trillion, two hundred forty-seven billion, one hundred nine million, four hundred ninety-one thousand, six hundred forty-nine".