5247691334656 has 99 divisors (see below), whose sum is σ = 11146277382457. Its totient is φ = 2468915363840.

The previous prime is 5247691334629. The next prime is 5247691334659. The reversal of 5247691334656 is 6564331967425.

The square root of 5247691334656 is 2290784.

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

It can be written as a sum of positive squares in only one way, i.e., 4085572838400 + 1162118496256 = 2021280^2 + 1078016^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5247691334594 and 5247691334603.

It is not an unprimeable number, because it can be changed into a prime (5247691334659) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1246184391 + ... + 1246188601.

Almost surely, 2^{5247691334656} is an apocalyptic number.

5247691334656 is the 2290784-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5247691334656

5247691334656 is an abundant number, since it is smaller than the sum of its proper divisors (5898586047801).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5247691334656 is an frugal number, since it uses more digits than its factorization.

5247691334656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476 (or 4230 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 61.

The spelling of 5247691334656 in words is "five trillion, two hundred forty-seven billion, six hundred ninety-one million, three hundred thirty-four thousand, six hundred fifty-six".