26905142839 has 2 divisors, whose sum is σ = 26905142840. Its totient is φ = 26905142838.

The previous prime is 26905142767. The next prime is 26905142893. The reversal of 26905142839 is 93824150962.

Together with next prime (26905142893) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26905142839 is a prime.

It is a super-2 number, since 2×26905142839² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26905142792 and 26905142801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26905148839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13452571419 + 13452571420.

It is an arithmetic number, because the mean of its divisors is an integer number (13452571420).

Almost surely, 2^26905142839 is an apocalyptic number.

26905142839 is a deficient number, since it is larger than the sum of its proper divisors (1).

26905142839 is an equidigital number, since it uses as much as digits as its factorization.

26905142839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 49.

It can be divided in two parts, 26905 and 142839, that added together give a square (169744 = 412²).

The spelling of 26905142839 in words is "twenty-six billion, nine hundred five million, one hundred forty-two thousand, eight hundred thirty-nine".