6661600100 has 36 divisors (see below), whose sum is σ = 14484750000. Its totient is φ = 2659280160.

The previous prime is 6661600067. The next prime is 6661600117. The reversal of 6661600100 is 10061666.

It is a self number, because there is not a number n which added to its sum of digits gives 6661600100.

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, 16850 + ... + 116649.

Almost surely, 2^6661600100 is an apocalyptic number.

It is an amenable number.

6661600100 is an abundant number, since it is smaller than the sum of its proper divisors (7823149900).

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

6661600100 is a wasteful number, since it uses less digits than its factorization.

6661600100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134012 (or 134005 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 6661600100 is about 81618.6259379561. The cubic root of 6661600100 is about 1881.5951547510.

Adding to 6661600100 its reverse (10061666), we get a palindrome (6671661766).

The spelling of 6661600100 in words is "six billion, six hundred sixty-one million, six hundred thousand, one hundred".