6436542456 has 48 divisors (see below), whose sum is σ = 18190233360. Its totient is φ = 2052230400.

The previous prime is 6436542451. The next prime is 6436542457. The reversal of 6436542456 is 6542456346.

It is a happy number.

6436542456 is a `hidden beast` number, since 64 + 3 + 6 + 542 + 45 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6436542451) 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 11 ways as a sum of consecutive naturals, for example, 1941745 + ... + 1945056.

It is an arithmetic number, because the mean of its divisors is an integer number (378963195).

Almost surely, 2^6436542456 is an apocalyptic number.

It is an amenable number.

6436542456 is an abundant number, since it is smaller than the sum of its proper divisors (11753690904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6436542456 is a wasteful number, since it uses less digits than its factorization.

6436542456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886836 (or 3886829 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

The square root of 6436542456 is about 80228.0652639711. The cubic root of 6436542456 is about 1860.1624762681.

The spelling of 6436542456 in words is "six billion, four hundred thirty-six million, five hundred forty-two thousand, four hundred fifty-six".