26143395193 has 2 divisors, whose sum is σ = 26143395194. Its totient is φ = 26143395192.

The previous prime is 26143395191. The next prime is 26143395221. The reversal of 26143395193 is 39159334162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17581964409 + 8561430784 = 132597^2 + 92528^2 .

It is a cyclic number.

It is not a de Polignac number, because 26143395193 - 2¹ = 26143395191 is a prime.

It is a super-2 number, since 2×26143395193² (a number of 22 digits) contains 22 as substring.

Together with 26143395191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26143395191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13071697596 + 13071697597.

It is an arithmetic number, because the mean of its divisors is an integer number (13071697597).

Almost surely, 2^26143395193 is an apocalyptic number.

It is an amenable number.

26143395193 is a deficient number, since it is larger than the sum of its proper divisors (1).

26143395193 is an equidigital number, since it uses as much as digits as its factorization.

26143395193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 46.

The spelling of 26143395193 in words is "twenty-six billion, one hundred forty-three million, three hundred ninety-five thousand, one hundred ninety-three".