26257670208019 has 2 divisors, whose sum is σ = 26257670208020. Its totient is φ = 26257670208018.

The previous prime is 26257670207959. The next prime is 26257670208103. The reversal of 26257670208019 is 91080207675262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26257670208019 - 2⁷ = 26257670207891 is a prime.

It is a super-2 number, since 2×26257670208019² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26257670203019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13128835104009 + 13128835104010.

It is an arithmetic number, because the mean of its divisors is an integer number (13128835104010).

Almost surely, 2^{26257670208019} is an apocalyptic number.

26257670208019 is a deficient number, since it is larger than the sum of its proper divisors (1).

26257670208019 is an equidigital number, since it uses as much as digits as its factorization.

26257670208019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 26257670208019 in words is "twenty-six trillion, two hundred fifty-seven billion, six hundred seventy million, two hundred eight thousand, nineteen".