4278643635 has 16 divisors (see below), whose sum is σ = 7823805696. Its totient is φ = 1955951328.

The previous prime is 4278643613. The next prime is 4278643643. The reversal of 4278643635 is 5363468724.

It is not a de Polignac number, because 4278643635 - 2⁶ = 4278643571 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20374389 + ... + 20374598.

It is an arithmetic number, because the mean of its divisors is an integer number (488987856).

Almost surely, 2^4278643635 is an apocalyptic number.

4278643635 is a deficient number, since it is larger than the sum of its proper divisors (3545162061).

4278643635 is a wasteful number, since it uses less digits than its factorization.

4278643635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40749002.

The product of its digits is 2903040, while the sum is 48.

The square root of 4278643635 is about 65411.3417917719. The cubic root of 4278643635 is about 1623.4367464119.

The spelling of 4278643635 in words is "four billion, two hundred seventy-eight million, six hundred forty-three thousand, six hundred thirty-five".