4278720797939 has 12 divisors (see below), whose sum is σ = 5111808743664. Its totient is φ = 3568354023024.

The previous prime is 4278720797893. The next prime is 4278720797971. The reversal of 4278720797939 is 9397970278724.

It is a happy number.

It is not a de Polignac number, because 4278720797939 - 2²⁰ = 4278719749363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4278720799939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1180009439 + ... + 1180013064.

It is an arithmetic number, because the mean of its divisors is an integer number (425984061972).

Almost surely, 2^{4278720797939} is an apocalyptic number.

4278720797939 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4278720797939 is a deficient number, since it is larger than the sum of its proper divisors (833087945725).

4278720797939 is a wasteful number, since it uses less digits than its factorization.

4278720797939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360022554 (or 2360022547 counting only the distinct ones).

The product of its (nonzero) digits is 672126336, while the sum is 74.

The spelling of 4278720797939 in words is "four trillion, two hundred seventy-eight billion, seven hundred twenty million, seven hundred ninety-seven thousand, nine hundred thirty-nine".