5156646647 has 4 divisors (see below), whose sum is σ = 5188282680. Its totient is φ = 5125010616.

The previous prime is 5156646637. The next prime is 5156646653. The reversal of 5156646647 is 7466466515.

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

It is a cyclic number.

It is not a de Polignac number, because 5156646647 - 2¹² = 5156642551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5156646595 and 5156646604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156646637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15817772 + ... + 15818097.

It is an arithmetic number, because the mean of its divisors is an integer number (1297070670).

Almost surely, 2^5156646647 is an apocalyptic number.

5156646647 is a deficient number, since it is larger than the sum of its proper divisors (31636033).

5156646647 is a wasteful number, since it uses less digits than its factorization.

5156646647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31636032.

The product of its digits is 3628800, while the sum is 50.

The square root of 5156646647 is about 71809.7949238124. The cubic root of 5156646647 is about 1727.6501053349.

The spelling of 5156646647 in words is "five billion, one hundred fifty-six million, six hundred forty-six thousand, six hundred forty-seven".