6128861765 has 8 divisors (see below), whose sum is σ = 7920375288. Its totient is φ = 4525928640.

The previous prime is 6128861759. The next prime is 6128861801. The reversal of 6128861765 is 5671688216.

It can be written as a sum of positive squares in 4 ways, for example, as 901860961 + 5227000804 = 30031^2 + 72298^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6128861765 - 2¹⁸ = 6128599621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47145026 + ... + 47145155.

It is an arithmetic number, because the mean of its divisors is an integer number (990046911).

Almost surely, 2^6128861765 is an apocalyptic number.

6128861765 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6128861765 is a deficient number, since it is larger than the sum of its proper divisors (1791513523).

6128861765 is a wasteful number, since it uses less digits than its factorization.

6128861765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94290199.

The product of its digits is 967680, while the sum is 50.

The square root of 6128861765 is about 78287.0472364362. The cubic root of 6128861765 is about 1830.0373015379.

The spelling of 6128861765 in words is "six billion, one hundred twenty-eight million, eight hundred sixty-one thousand, seven hundred sixty-five".