26195745137 has 2 divisors, whose sum is σ = 26195745138. Its totient is φ = 26195745136.

The previous prime is 26195745131. The next prime is 26195745187. The reversal of 26195745137 is 73154759162.

It is an a-pointer prime, because the next prime (26195745187) can be obtained adding 26195745137 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26122317376 + 73427761 = 161624^2 + 8569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26195745137 is a prime.

It is not a weakly prime, because it can be changed into another prime (26195745131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13097872568 + 13097872569.

It is an arithmetic number, because the mean of its divisors is an integer number (13097872569).

Almost surely, 2^26195745137 is an apocalyptic number.

It is an amenable number.

26195745137 is a deficient number, since it is larger than the sum of its proper divisors (1).

26195745137 is an equidigital number, since it uses as much as digits as its factorization.

26195745137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 50.

The spelling of 26195745137 in words is "twenty-six billion, one hundred ninety-five million, seven hundred forty-five thousand, one hundred thirty-seven".