6516610443 has 48 divisors (see below), whose sum is σ = 11366118400. Its totient is φ = 3514596480.

The previous prime is 6516610423. The next prime is 6516610469. The reversal of 6516610443 is 3440166156.

It is a happy number.

It is not a de Polignac number, because 6516610443 - 2¹⁸ = 6516348299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6516610398 and 6516610407.

It is not an unprimeable number, because it can be changed into a prime (6516610423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 314343 + ... + 334431.

Almost surely, 2^6516610443 is an apocalyptic number.

6516610443 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6516610443 is a deficient number, since it is larger than the sum of its proper divisors (4849507957).

6516610443 is a wasteful number, since it uses less digits than its factorization.

6516610443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20392 (or 20389 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 6516610443 is about 80725.5253497926. The cubic root of 6516610443 is about 1867.8439355141.

Adding to 6516610443 its reverse (3440166156), we get a palindrome (9956776599).

The spelling of 6516610443 in words is "six billion, five hundred sixteen million, six hundred ten thousand, four hundred forty-three".