7890111000071 has 2 divisors, whose sum is σ = 7890111000072. Its totient is φ = 7890111000070.

The previous prime is 7890111000053. The next prime is 7890111000077. The reversal of 7890111000071 is 1700001110987.

It is a strong prime.

It is an emirp because it is prime and its reverse (1700001110987) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7890111000071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7890110999995 and 7890111000040.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7890111000077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3945055500035 + 3945055500036.

It is an arithmetic number, because the mean of its divisors is an integer number (3945055500036).

Almost surely, 2^{7890111000071} is an apocalyptic number.

7890111000071 is a deficient number, since it is larger than the sum of its proper divisors (1).

7890111000071 is an equidigital number, since it uses as much as digits as its factorization.

7890111000071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 35.

The spelling of 7890111000071 in words is "seven trillion, eight hundred ninety billion, one hundred eleven million, seventy-one", and thus it is an aban number.