7111618542 has 24 divisors (see below), whose sum is σ = 17609722416. Its totient is φ = 2031890976.

The previous prime is 7111618537. The next prime is 7111618573. The reversal of 7111618542 is 2458161117.

It is a junction number, because it is equal to n+sod(n) for n = 7111618497 and 7111618506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28220583 + ... + 28220834.

It is an arithmetic number, because the mean of its divisors is an integer number (733738434).

Almost surely, 2^7111618542 is an apocalyptic number.

7111618542 is an abundant number, since it is smaller than the sum of its proper divisors (10498103874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7111618542 is a wasteful number, since it uses less digits than its factorization.

7111618542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56441432 (or 56441429 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 7111618542 is about 84330.4129125430. The cubic root of 7111618542 is about 1923.0451661125.

Adding to 7111618542 its reverse (2458161117), we get a palindrome (9569779659).

The spelling of 7111618542 in words is "seven billion, one hundred eleven million, six hundred eighteen thousand, five hundred forty-two".