10261278439 has 2 divisors, whose sum is σ = 10261278440. Its totient is φ = 10261278438.

The previous prime is 10261278437. The next prime is 10261278497. The reversal of 10261278439 is 93487216201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10261278439 - 2¹ = 10261278437 is a prime.

Together with 10261278437, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10261278395 and 10261278404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10261278437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5130639219 + 5130639220.

It is an arithmetic number, because the mean of its divisors is an integer number (5130639220).

Almost surely, 2^10261278439 is an apocalyptic number.

10261278439 is a deficient number, since it is larger than the sum of its proper divisors (1).

10261278439 is an equidigital number, since it uses as much as digits as its factorization.

10261278439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 10261278439 in words is "ten billion, two hundred sixty-one million, two hundred seventy-eight thousand, four hundred thirty-nine".