26001965871137 has 2 divisors, whose sum is σ = 26001965871138. Its totient is φ = 26001965871136.

The previous prime is 26001965871073. The next prime is 26001965871143. The reversal of 26001965871137 is 73117856910062.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22072040251921 + 3929925619216 = 4698089^2 + 1982404^2 .

It is a cyclic number.

It is not a de Polignac number, because 26001965871137 - 2⁶ = 26001965871073 is a prime.

It is a super-2 number, since 2×26001965871137² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26001965871157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13000982935568 + 13000982935569.

It is an arithmetic number, because the mean of its divisors is an integer number (13000982935569).

Almost surely, 2^{26001965871137} is an apocalyptic number.

It is an amenable number.

26001965871137 is a deficient number, since it is larger than the sum of its proper divisors (1).

26001965871137 is an equidigital number, since it uses as much as digits as its factorization.

26001965871137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 26001965871137 in words is "twenty-six trillion, one billion, nine hundred sixty-five million, eight hundred seventy-one thousand, one hundred thirty-seven".