4278016540247 has 2 divisors, whose sum is σ = 4278016540248. Its totient is φ = 4278016540246.

The previous prime is 4278016540219. The next prime is 4278016540253. The reversal of 4278016540247 is 7420456108724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4278016540247 - 2⁸ = 4278016539991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4278016540195 and 4278016540204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4278016545247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139008270123 + 2139008270124.

It is an arithmetic number, because the mean of its divisors is an integer number (2139008270124).

Almost surely, 2^{4278016540247} is an apocalyptic number.

4278016540247 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278016540247 is an equidigital number, since it uses as much as digits as its factorization.

4278016540247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3010560, while the sum is 50.

The spelling of 4278016540247 in words is "four trillion, two hundred seventy-eight billion, sixteen million, five hundred forty thousand, two hundred forty-seven".