6411975869 has 16 divisors (see below), whose sum is σ = 6946443504. Its totient is φ = 5883494400.

The previous prime is 6411975853. The next prime is 6411975877. The reversal of 6411975869 is 9685791146.

It can be written as a sum of positive squares in 8 ways, for example, as 180768025 + 6231207844 = 13445^2 + 78938^2 .

It is a cyclic number.

It is not a de Polignac number, because 6411975869 - 2⁴ = 6411975853 is a prime.

It is a super-2 number, since 2×6411975869² = 82226869089276610322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6411975839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2106989 + ... + 2110029.

It is an arithmetic number, because the mean of its divisors is an integer number (434152719).

Almost surely, 2^6411975869 is an apocalyptic number.

It is an amenable number.

6411975869 is a deficient number, since it is larger than the sum of its proper divisors (534467635).

6411975869 is a wasteful number, since it uses less digits than its factorization.

6411975869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968.

The product of its digits is 3265920, while the sum is 56.

The square root of 6411975869 is about 80074.8141989727. The cubic root of 6411975869 is about 1857.7928756071.

The spelling of 6411975869 in words is "six billion, four hundred eleven million, nine hundred seventy-five thousand, eight hundred sixty-nine".