26845687357 has 2 divisors, whose sum is σ = 26845687358. Its totient is φ = 26845687356.

The previous prime is 26845687321. The next prime is 26845687441. The reversal of 26845687357 is 75378654862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25495786276 + 1349901081 = 159674^2 + 36741^2 .

It is a cyclic number.

It is not a de Polignac number, because 26845687357 - 2²³ = 26837298749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26845687295 and 26845687304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26845687307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13422843678 + 13422843679.

It is an arithmetic number, because the mean of its divisors is an integer number (13422843679).

Almost surely, 2^26845687357 is an apocalyptic number.

It is an amenable number.

26845687357 is a deficient number, since it is larger than the sum of its proper divisors (1).

26845687357 is an equidigital number, since it uses as much as digits as its factorization.

26845687357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67737600, while the sum is 61.

The spelling of 26845687357 in words is "twenty-six billion, eight hundred forty-five million, six hundred eighty-seven thousand, three hundred fifty-seven".