26531268812357 has 2 divisors, whose sum is σ = 26531268812358. Its totient is φ = 26531268812356.

The previous prime is 26531268812341. The next prime is 26531268812453. The reversal of 26531268812357 is 75321886213562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21861179252836 + 4670089559521 = 4675594^2 + 2161039^2 .

It is a cyclic number.

It is not a de Polignac number, because 26531268812357 - 2⁴ = 26531268812341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26531268812296 and 26531268812305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26531268817357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13265634406178 + 13265634406179.

It is an arithmetic number, because the mean of its divisors is an integer number (13265634406179).

Almost surely, 2^{26531268812357} is an apocalyptic number.

It is an amenable number.

26531268812357 is a deficient number, since it is larger than the sum of its proper divisors (1).

26531268812357 is an equidigital number, since it uses as much as digits as its factorization.

26531268812357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 59.

The spelling of 26531268812357 in words is "twenty-six trillion, five hundred thirty-one billion, two hundred sixty-eight million, eight hundred twelve thousand, three hundred fifty-seven".