6128866867 has 4 divisors (see below), whose sum is σ = 6152714856. Its totient is φ = 6105018880.

The previous prime is 6128866853. The next prime is 6128866907. The reversal of 6128866867 is 7686688216.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6128866867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6128866567) 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, 11923609 + ... + 11924122.

It is an arithmetic number, because the mean of its divisors is an integer number (1538178714).

Almost surely, 2^6128866867 is an apocalyptic number.

6128866867 is a deficient number, since it is larger than the sum of its proper divisors (23847989).

6128866867 is a wasteful number, since it uses less digits than its factorization.

6128866867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23847988.

The product of its digits is 9289728, while the sum is 58.

The square root of 6128866867 is about 78287.0798216411. The cubic root of 6128866867 is about 1830.0378093455.

The spelling of 6128866867 in words is "six billion, one hundred twenty-eight million, eight hundred sixty-six thousand, eight hundred sixty-seven".