11378511271 has 2 divisors, whose sum is σ = 11378511272. Its totient is φ = 11378511270.

The previous prime is 11378511269. The next prime is 11378511317. The reversal of 11378511271 is 17211587311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11378511271 - 2¹ = 11378511269 is a prime.

Together with 11378511269, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11378511271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11378514271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5689255635 + 5689255636.

It is an arithmetic number, because the mean of its divisors is an integer number (5689255636).

Almost surely, 2^11378511271 is an apocalyptic number.

11378511271 is a deficient number, since it is larger than the sum of its proper divisors (1).

11378511271 is an equidigital number, since it uses as much as digits as its factorization.

11378511271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 37.

The spelling of 11378511271 in words is "eleven billion, three hundred seventy-eight million, five hundred eleven thousand, two hundred seventy-one".