6436641122 has 4 divisors (see below), whose sum is σ = 9654961686. Its totient is φ = 3218320560.

The previous prime is 6436641091. The next prime is 6436641173. The reversal of 6436641122 is 2211466346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2211466346 = 2 ⋅1105733173.

It can be written as a sum of positive squares in only one way, i.e., 5932234441 + 504406681 = 77021^2 + 22459^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609160279 + ... + 1609160282.

Almost surely, 2^6436641122 is an apocalyptic number.

6436641122 is a deficient number, since it is larger than the sum of its proper divisors (3218320564).

6436641122 is a wasteful number, since it uses less digits than its factorization.

6436641122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218320563.

The product of its digits is 41472, while the sum is 35.

The square root of 6436641122 is about 80228.6801711209. The cubic root of 6436641122 is about 1860.1719810530.

The spelling of 6436641122 in words is "six billion, four hundred thirty-six million, six hundred forty-one thousand, one hundred twenty-two".