26885872854469 has 2 divisors, whose sum is σ = 26885872854470. Its totient is φ = 26885872854468.

The previous prime is 26885872854461. The next prime is 26885872854527. The reversal of 26885872854469 is 96445827858862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25123051044100 + 1762821810369 = 5012290^2 + 1327713^2 .

It is a cyclic number.

It is not a de Polignac number, because 26885872854469 - 2³ = 26885872854461 is a prime.

It is a super-2 number, since 2×26885872854469² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26885872854392 and 26885872854401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26885872854461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13442936427234 + 13442936427235.

It is an arithmetic number, because the mean of its divisors is an integer number (13442936427235).

Almost surely, 2^{26885872854469} is an apocalyptic number.

It is an amenable number.

26885872854469 is a deficient number, since it is larger than the sum of its proper divisors (1).

26885872854469 is an equidigital number, since it uses as much as digits as its factorization.

26885872854469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14863564800, while the sum is 82.

The spelling of 26885872854469 in words is "twenty-six trillion, eight hundred eighty-five billion, eight hundred seventy-two million, eight hundred fifty-four thousand, four hundred sixty-nine".