10011206661 has 16 divisors (see below), whose sum is σ = 13719920064. Its totient is φ = 6488601984.

The previous prime is 10011206657. The next prime is 10011206663. The reversal of 10011206661 is 16660211001.

It is not a de Polignac number, because 10011206661 - 2² = 10011206657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011206663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107265 + ... + 177561.

It is an arithmetic number, because the mean of its divisors is an integer number (857495004).

Almost surely, 2^10011206661 is an apocalyptic number.

It is an amenable number.

10011206661 is a deficient number, since it is larger than the sum of its proper divisors (3708713403).

10011206661 is a wasteful number, since it uses less digits than its factorization.

10011206661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71620.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 10011206661 its reverse (16660211001), we get a palindrome (26671417662).

The spelling of 10011206661 in words is "ten billion, eleven million, two hundred six thousand, six hundred sixty-one".