10661605606 has 4 divisors (see below), whose sum is σ = 15992408412. Its totient is φ = 5330802802.

The previous prime is 10661605597. The next prime is 10661605609. The reversal of 10661605606 is 60650616601.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×10661605606² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661605609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665401400 + ... + 2665401403.

It is an arithmetic number, because the mean of its divisors is an integer number (3998102103).

Almost surely, 2^10661605606 is an apocalyptic number.

10661605606 is a deficient number, since it is larger than the sum of its proper divisors (5330802806).

10661605606 is an equidigital number, since it uses as much as digits as its factorization.

10661605606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330802805.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 10661605606 in words is "ten billion, six hundred sixty-one million, six hundred five thousand, six hundred six".