71121111907 has 2 divisors, whose sum is σ = 71121111908. Its totient is φ = 71121111906.

The previous prime is 71121111899. The next prime is 71121111931. The reversal of 71121111907 is 70911112117.

It is a weak prime.

It is an emirp because it is prime and its reverse (70911112117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71121111907 - 2³ = 71121111899 is a prime.

It is not a weakly prime, because it can be changed into another prime (71121111007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35560555953 + 35560555954.

It is an arithmetic number, because the mean of its divisors is an integer number (35560555954).

Almost surely, 2^71121111907 is an apocalyptic number.

71121111907 is a deficient number, since it is larger than the sum of its proper divisors (1).

71121111907 is an equidigital number, since it uses as much as digits as its factorization.

71121111907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 31.

The spelling of 71121111907 in words is "seventy-one billion, one hundred twenty-one million, one hundred eleven thousand, nine hundred seven".