26001251640019 has 2 divisors, whose sum is σ = 26001251640020. Its totient is φ = 26001251640018.

The previous prime is 26001251639981. The next prime is 26001251640041. The reversal of 26001251640019 is 91004615210062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26001251640019 - 2¹¹ = 26001251637971 is a prime.

It is a super-2 number, since 2×26001251640019² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26001251640019.

It is not a weakly prime, because it can be changed into another prime (26001251640059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13000625820009 + 13000625820010.

It is an arithmetic number, because the mean of its divisors is an integer number (13000625820010).

Almost surely, 2^{26001251640019} is an apocalyptic number.

26001251640019 is a deficient number, since it is larger than the sum of its proper divisors (1).

26001251640019 is an equidigital number, since it uses as much as digits as its factorization.

26001251640019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 26001251640019 in words is "twenty-six trillion, one billion, two hundred fifty-one million, six hundred forty thousand, nineteen".