6413543409 has 72 divisors (see below), whose sum is σ = 10977083712. Its totient is φ = 3318456960.

The previous prime is 6413543377. The next prime is 6413543413. The reversal of 6413543409 is 9043453146.

It is not a de Polignac number, because 6413543409 - 2⁵ = 6413543377 is a prime.

It is a super-2 number, since 2×6413543409² = 82267078118254682562, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (6413543429) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1314244 + ... + 1319114.

It is an arithmetic number, because the mean of its divisors is an integer number (152459496).

Almost surely, 2^6413543409 is an apocalyptic number.

It is an amenable number.

6413543409 is a deficient number, since it is larger than the sum of its proper divisors (4563540303).

6413543409 is a wasteful number, since it uses less digits than its factorization.

6413543409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967 (or 4947 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 6413543409 is about 80084.6015723372. The cubic root of 6413543409 is about 1857.9442552246.

The spelling of 6413543409 in words is "six billion, four hundred thirteen million, five hundred forty-three thousand, four hundred nine".