27256423511 has 2 divisors, whose sum is σ = 27256423512. Its totient is φ = 27256423510.

The previous prime is 27256423499. The next prime is 27256423549. The reversal of 27256423511 is 11532465272.

It is an a-pointer prime, because the next prime (27256423549) can be obtained adding 27256423511 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27256423511 - 2¹⁸ = 27256161367 is a prime.

It is a super-2 number, since 2×27256423511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27256423591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13628211755 + 13628211756.

It is an arithmetic number, because the mean of its divisors is an integer number (13628211756).

Almost surely, 2^27256423511 is an apocalyptic number.

27256423511 is a deficient number, since it is larger than the sum of its proper divisors (1).

27256423511 is an equidigital number, since it uses as much as digits as its factorization.

27256423511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

Adding to 27256423511 its reverse (11532465272), we get a palindrome (38788888783).

The spelling of 27256423511 in words is "twenty-seven billion, two hundred fifty-six million, four hundred twenty-three thousand, five hundred eleven".