11172017071 has 2 divisors, whose sum is σ = 11172017072. Its totient is φ = 11172017070.

The previous prime is 11172017069. The next prime is 11172017099. The reversal of 11172017071 is 17071027111.

It is an a-pointer prime, because the next prime (11172017099) can be obtained adding 11172017071 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11172017071 - 2¹ = 11172017069 is a prime.

Together with 11172017069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11172017771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586008535 + 5586008536.

It is an arithmetic number, because the mean of its divisors is an integer number (5586008536).

Almost surely, 2^11172017071 is an apocalyptic number.

11172017071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11172017071 is an equidigital number, since it uses as much as digits as its factorization.

11172017071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 686, while the sum is 28.

The spelling of 11172017071 in words is "eleven billion, one hundred seventy-two million, seventeen thousand, seventy-one".