103611611566 has 32 divisors (see below), whose sum is σ = 167470617600. Its totient is φ = 47918122560.

The previous prime is 103611611443. The next prime is 103611611591. The reversal of 103611611566 is 665116116301.

It is a super-3 number, since 3×103611611566³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4431186 + ... + 4454506.

It is an arithmetic number, because the mean of its divisors is an integer number (5233456800).

Almost surely, 2^103611611566 is an apocalyptic number.

103611611566 is a deficient number, since it is larger than the sum of its proper divisors (63859006034).

103611611566 is a wasteful number, since it uses less digits than its factorization.

103611611566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26104.

The product of its (nonzero) digits is 19440, while the sum is 37.

Adding to 103611611566 its reverse (665116116301), we get a palindrome (768727727867).

The spelling of 103611611566 in words is "one hundred three billion, six hundred eleven million, six hundred eleven thousand, five hundred sixty-six".