4032638656 has 28 divisors (see below), whose sum is σ = 8037548568. Its totient is φ = 2007429632.

The previous prime is 4032638651. The next prime is 4032638669. The reversal of 4032638656 is 6568362304.

It is not an unprimeable number, because it can be changed into a prime (4032638651) 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, 124261 + ... + 153316.

It is an arithmetic number, because the mean of its divisors is an integer number (287055306).

Almost surely, 2^4032638656 is an apocalyptic number.

It is an amenable number.

4032638656 is a deficient number, since it is larger than the sum of its proper divisors (4004909912).

4032638656 is a wasteful number, since it uses less digits than its factorization.

4032638656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277816 (or 277806 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The square root of 4032638656 is about 63503.0602097253. The cubic root of 4032638656 is about 1591.7069147259.

The spelling of 4032638656 in words is "four billion, thirty-two million, six hundred thirty-eight thousand, six hundred fifty-six".