6601516101 has 6 divisors (see below), whose sum is σ = 9535523270. Its totient is φ = 4401010728.

The previous prime is 6601516091. The next prime is 6601516121. The reversal of 6601516101 is 1016151066.

6601516101 is a `hidden beast` number, since 6 + 601 + 51 + 6 + 1 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6400160001 + 201356100 = 80001^2 + 14190^2 .

It is not a de Polignac number, because 6601516101 - 2⁵ = 6601516069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601516121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 366750886 + ... + 366750903.

Almost surely, 2^6601516101 is an apocalyptic number.

It is an amenable number.

6601516101 is a deficient number, since it is larger than the sum of its proper divisors (2934007169).

6601516101 is a wasteful number, since it uses less digits than its factorization.

6601516101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733501795 (or 733501792 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 6601516101 is about 81249.7144671906. The cubic root of 6601516101 is about 1875.9210740713.

Adding to 6601516101 its reverse (1016151066), we get a palindrome (7617667167).

The spelling of 6601516101 in words is "six billion, six hundred one million, five hundred sixteen thousand, one hundred one".