7111662108542 has 4 divisors (see below), whose sum is σ = 10667493162816. Its totient is φ = 3555831054270.

The previous prime is 7111662108521. The next prime is 7111662108559. The reversal of 7111662108542 is 2458012661117.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 7111662108493 and 7111662108502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1777915527134 + ... + 1777915527137.

It is an arithmetic number, because the mean of its divisors is an integer number (2666873290704).

Almost surely, 2^{7111662108542} is an apocalyptic number.

7111662108542 is a deficient number, since it is larger than the sum of its proper divisors (3555831054274).

7111662108542 is a wasteful number, since it uses less digits than its factorization.

7111662108542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555831054273.

The product of its (nonzero) digits is 161280, while the sum is 44.

Adding to 7111662108542 its reverse (2458012661117), we get a palindrome (9569674769659).

The spelling of 7111662108542 in words is "seven trillion, one hundred eleven billion, six hundred sixty-two million, one hundred eight thousand, five hundred forty-two".