6433638436 has 12 divisors (see below), whose sum is σ = 11259714928. Its totient is φ = 3216577032.

The previous prime is 6433638401. The next prime is 6433638467. The reversal of 6433638436 is 6348363346.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 7795 + ... + 113701.

Almost surely, 2^6433638436 is an apocalyptic number.

It is an amenable number.

6433638436 is a deficient number, since it is larger than the sum of its proper divisors (4826076492).

6433638436 is a wasteful number, since it uses less digits than its factorization.

6433638436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121098 (or 121096 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 46.

The square root of 6433638436 is about 80209.9646926739. The cubic root of 6433638436 is about 1859.8826800014.

The spelling of 6433638436 in words is "six billion, four hundred thirty-three million, six hundred thirty-eight thousand, four hundred thirty-six".