660011061700 has 216 divisors, whose sum is σ = 1631792433600. Its totient is φ = 230945495040.

The previous prime is 660011061667. The next prime is 660011061763. The reversal of 660011061700 is 7160110066.

660011061700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×660011061700² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 29090961 + ... + 29113639.

It is an arithmetic number, because the mean of its divisors is an integer number (7554594600).

Almost surely, 2^660011061700 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 660011061700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815896216800).

660011061700 is an abundant number, since it is smaller than the sum of its proper divisors (971781371900).

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

660011061700 is a wasteful number, since it uses less digits than its factorization.

660011061700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22799 (or 22775 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

Adding to 660011061700 its reverse (7160110066), we get a palindrome (667171171766).

The spelling of 660011061700 in words is "six hundred sixty billion, eleven million, sixty-one thousand, seven hundred".