6128564813 has 4 divisors (see below), whose sum is σ = 7004074080. Its totient is φ = 5253055548.

The previous prime is 6128564803. The next prime is 6128564833. The reversal of 6128564813 is 3184658216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6128564813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6128564803) 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, 437754623 + ... + 437754636.

It is an arithmetic number, because the mean of its divisors is an integer number (1751018520).

Almost surely, 2^6128564813 is an apocalyptic number.

It is an amenable number.

6128564813 is a deficient number, since it is larger than the sum of its proper divisors (875509267).

6128564813 is an equidigital number, since it uses as much as digits as its factorization.

6128564813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875509266.

The product of its digits is 276480, while the sum is 44.

The square root of 6128564813 is about 78285.1506545143. The cubic root of 6128564813 is about 1830.0077450975.

The spelling of 6128564813 in words is "six billion, one hundred twenty-eight million, five hundred sixty-four thousand, eight hundred thirteen".