27803216217 has 16 divisors (see below), whose sum is σ = 42413340672. Its totient is φ = 15870101520.

The previous prime is 27803216183. The next prime is 27803216251. The reversal of 27803216217 is 71261230872.

It is an interprime number because it is at equal distance from previous prime (27803216183) and next prime (27803216251).

It is not a de Polignac number, because 27803216217 - 2⁶ = 27803216153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27803216257) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 707523 + ... + 745784.

It is an arithmetic number, because the mean of its divisors is an integer number (2650833792).

Almost surely, 2^27803216217 is an apocalyptic number.

It is an amenable number.

27803216217 is a deficient number, since it is larger than the sum of its proper divisors (14610124455).

27803216217 is a wasteful number, since it uses less digits than its factorization.

27803216217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454228.

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 27803216217 in words is "twenty-seven billion, eight hundred three million, two hundred sixteen thousand, two hundred seventeen".