26767617157 has 2 divisors, whose sum is σ = 26767617158. Its totient is φ = 26767617156.

The previous prime is 26767617131. The next prime is 26767617167. The reversal of 26767617157 is 75171676762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25738105761 + 1029511396 = 160431^2 + 32086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26767617157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26767617098 and 26767617107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26767617167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13383808578 + 13383808579.

It is an arithmetic number, because the mean of its divisors is an integer number (13383808579).

Almost surely, 2^26767617157 is an apocalyptic number.

It is an amenable number.

26767617157 is a deficient number, since it is larger than the sum of its proper divisors (1).

26767617157 is an equidigital number, since it uses as much as digits as its factorization.

26767617157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5186160, while the sum is 55.

The spelling of 26767617157 in words is "twenty-six billion, seven hundred sixty-seven million, six hundred seventeen thousand, one hundred fifty-seven".