7000006999991 has 2 divisors, whose sum is σ = 7000006999992. Its totient is φ = 7000006999990.

The previous prime is 7000006999957. The next prime is 7000007000059. The reversal of 7000006999991 is 1999996000007.

7000006999991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7000006999991 - 2¹⁰ = 7000006998967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7000006999991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7000006999691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3500003499995 + 3500003499996.

It is an arithmetic number, because the mean of its divisors is an integer number (3500003499996).

Almost surely, 2^{7000006999991} is an apocalyptic number.

7000006999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7000006999991 is an equidigital number, since it uses as much as digits as its factorization.

7000006999991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2480058, while the sum is 59.

It can be divided in two parts, 7000006 and 999991, that added together give a palindrome (7999997).

The spelling of 7000006999991 in words is "seven trillion, six million, nine hundred ninety-nine thousand, nine hundred ninety-one".