7948565542111 has 2 divisors, whose sum is σ = 7948565542112. Its totient is φ = 7948565542110.

The previous prime is 7948565542109. The next prime is 7948565542129. The reversal of 7948565542111 is 1112455658497.

It is a weak prime.

It is an emirp because it is prime and its reverse (1112455658497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7948565542111 - 2¹ = 7948565542109 is a prime.

Together with 7948565542109, 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 (7948565542811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3974282771055 + 3974282771056.

It is an arithmetic number, because the mean of its divisors is an integer number (3974282771056).

Almost surely, 2^{7948565542111} is an apocalyptic number.

7948565542111 is a deficient number, since it is larger than the sum of its proper divisors (1).

7948565542111 is an equidigital number, since it uses as much as digits as its factorization.

7948565542111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096000, while the sum is 58.

The spelling of 7948565542111 in words is "seven trillion, nine hundred forty-eight billion, five hundred sixty-five million, five hundred forty-two thousand, one hundred eleven".