5312016643 has 4 divisors (see below), whose sum is σ = 5379257440. Its totient is φ = 5244775848.

The previous prime is 5312016613. The next prime is 5312016659. The reversal of 5312016643 is 3466102135.

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 5312016643 - 2¹³ = 5312008451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5312016613) 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 3 ways as a sum of consecutive naturals, for example, 33620280 + ... + 33620437.

It is an arithmetic number, because the mean of its divisors is an integer number (1344814360).

Almost surely, 2^5312016643 is an apocalyptic number.

5312016643 is a deficient number, since it is larger than the sum of its proper divisors (67240797).

5312016643 is an equidigital number, since it uses as much as digits as its factorization.

5312016643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67240796.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 5312016643 is about 72883.5828084761. The cubic root of 5312016643 is about 1744.8300908175.

Adding to 5312016643 its reverse (3466102135), we get a palindrome (8778118778).

The spelling of 5312016643 in words is "five billion, three hundred twelve million, sixteen thousand, six hundred forty-three".