14378271217 has 2 divisors, whose sum is σ = 14378271218. Its totient is φ = 14378271216.

The previous prime is 14378271211. The next prime is 14378271227. The reversal of 14378271217 is 71217287341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13348567296 + 1029703921 = 115536^2 + 32089^2 .

It is a cyclic number.

It is not a de Polignac number, because 14378271217 - 2³ = 14378271209 is a prime.

It is a super-2 number, since 2×14378271217² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14378271211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7189135608 + 7189135609.

It is an arithmetic number, because the mean of its divisors is an integer number (7189135609).

Almost surely, 2^14378271217 is an apocalyptic number.

It is an amenable number.

14378271217 is a deficient number, since it is larger than the sum of its proper divisors (1).

14378271217 is an equidigital number, since it uses as much as digits as its factorization.

14378271217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131712, while the sum is 43.

The spelling of 14378271217 in words is "fourteen billion, three hundred seventy-eight million, two hundred seventy-one thousand, two hundred seventeen".