6426199965 has 16 divisors (see below), whose sum is σ = 10319867136. Its totient is φ = 3414657600.

The previous prime is 6426199957. The next prime is 6426199979. The reversal of 6426199965 is 5699916246.

It is a happy number.

It is not a de Polignac number, because 6426199965 - 2³ = 6426199957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786366 + ... + 794495.

It is an arithmetic number, because the mean of its divisors is an integer number (644991696).

Almost surely, 2^6426199965 is an apocalyptic number.

It is an amenable number.

6426199965 is a deficient number, since it is larger than the sum of its proper divisors (3893667171).

6426199965 is a wasteful number, since it uses less digits than its factorization.

6426199965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581140.

The product of its digits is 6298560, while the sum is 57.

The square root of 6426199965 is about 80163.5825359621. The cubic root of 6426199965 is about 1859.1656145981.

The spelling of 6426199965 in words is "six billion, four hundred twenty-six million, one hundred ninety-nine thousand, nine hundred sixty-five".