6616111623 has 32 divisors (see below), whose sum is σ = 9857760000. Its totient is φ = 3912330240.

The previous prime is 6616111613. The next prime is 6616111699. The reversal of 6616111623 is 3261116166.

It is not a de Polignac number, because 6616111623 - 2⁶ = 6616111559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616111613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1770465 + ... + 1774197.

It is an arithmetic number, because the mean of its divisors is an integer number (308055000).

Almost surely, 2^6616111623 is an apocalyptic number.

6616111623 is a deficient number, since it is larger than the sum of its proper divisors (3241648377).

6616111623 is a wasteful number, since it uses less digits than its factorization.

6616111623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039.

The product of its digits is 7776, while the sum is 33.

The square root of 6616111623 is about 81339.4837886251. The cubic root of 6616111623 is about 1877.3025695306.

Adding to 6616111623 its reverse (3261116166), we get a palindrome (9877227789).

The spelling of 6616111623 in words is "six billion, six hundred sixteen million, one hundred eleven thousand, six hundred twenty-three".