4278644673 has 8 divisors (see below), whose sum is σ = 5733528000. Its totient is φ = 2838095568.

The previous prime is 4278644663. The next prime is 4278644687. The reversal of 4278644673 is 3764468724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4278644673 - 2¹⁸ = 4278382529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4278644603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3582858 + ... + 3584051.

It is an arithmetic number, because the mean of its divisors is an integer number (716691000).

Almost surely, 2^4278644673 is an apocalyptic number.

It is an amenable number.

4278644673 is a deficient number, since it is larger than the sum of its proper divisors (1454883327).

4278644673 is a wasteful number, since it uses less digits than its factorization.

4278644673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7167111.

The product of its digits is 5419008, while the sum is 51.

The square root of 4278644673 is about 65411.3497261752. The cubic root of 4278644673 is about 1623.4368776939.

The spelling of 4278644673 in words is "four billion, two hundred seventy-eight million, six hundred forty-four thousand, six hundred seventy-three".