27216563426 has 16 divisors (see below), whose sum is σ = 44225374200. Its totient is φ = 12561488784.

The previous prime is 27216563411. The next prime is 27216563441. The reversal of 27216563426 is 62436561272.

It is an interprime number because it is at equal distance from previous prime (27216563411) and next prime (27216563441).

It can be written as a sum of positive squares in 4 ways, for example, as 642673201 + 26573890225 = 25351^2 + 163015^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3092621 + ... + 3101408.

Almost surely, 2^27216563426 is an apocalyptic number.

27216563426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27216563426 is a deficient number, since it is larger than the sum of its proper divisors (17008810774).

27216563426 is an equidigital number, since it uses as much as digits as its factorization.

27216563426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6194070 (or 6194044 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The spelling of 27216563426 in words is "twenty-seven billion, two hundred sixteen million, five hundred sixty-three thousand, four hundred twenty-six".