66160111600 has 120 divisors (see below), whose sum is σ = 175021440768. Its totient is φ = 23833209600.

The previous prime is 66160111583. The next prime is 66160111631. The reversal of 66160111600 is 611106166.

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 23 ways as a sum of consecutive naturals, for example, 400537 + ... + 541063.

Almost surely, 2^66160111600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66160111600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87510720384).

66160111600 is an abundant number, since it is smaller than the sum of its proper divisors (108861329168).

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

66160111600 is a wasteful number, since it uses less digits than its factorization.

66160111600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140663 (or 140652 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

Adding to 66160111600 its reverse (611106166), we get a palindrome (66771217766).

The spelling of 66160111600 in words is "sixty-six billion, one hundred sixty million, one hundred eleven thousand, six hundred".