6436442011 has 4 divisors (see below), whose sum is σ = 6436615024. Its totient is φ = 6436269000.

The previous prime is 6436441987. The next prime is 6436442017. The reversal of 6436442011 is 1102446346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1102446346 = 2 ⋅551223173.

It is a cyclic number.

It is not a de Polignac number, because 6436442011 - 2¹¹ = 6436439963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6436442017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5280 + ... + 113581.

It is an arithmetic number, because the mean of its divisors is an integer number (1609153756).

Almost surely, 2^6436442011 is an apocalyptic number.

6436442011 is a deficient number, since it is larger than the sum of its proper divisors (173013).

6436442011 is a wasteful number, since it uses less digits than its factorization.

6436442011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173012.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 6436442011 is about 80227.4392648799. The cubic root of 6436442011 is about 1860.1528000073.

Adding to 6436442011 its reverse (1102446346), we get a palindrome (7538888357).

The spelling of 6436442011 in words is "six billion, four hundred thirty-six million, four hundred forty-two thousand, eleven".