10011606661 has 16 divisors (see below), whose sum is σ = 11597249664. Its totient is φ = 8465131584.

The previous prime is 10011606641. The next prime is 10011606733. The reversal of 10011606661 is 16660611001.

It is a de Polignac number, because none of the positive numbers 2^k-10011606661 is a prime.

It is a super-3 number, since 3×10011606661³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011606641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380611 + ... + 406063.

It is an arithmetic number, because the mean of its divisors is an integer number (724828104).

Almost surely, 2^10011606661 is an apocalyptic number.

It is an amenable number.

10011606661 is a deficient number, since it is larger than the sum of its proper divisors (1585643003).

10011606661 is an equidigital number, since it uses as much as digits as its factorization.

10011606661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26220.

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

The spelling of 10011606661 in words is "ten billion, eleven million, six hundred six thousand, six hundred sixty-one".