10661615606 has 8 divisors (see below), whose sum is σ = 15994475784. Its totient is φ = 5330123680.

The previous prime is 10661615579. The next prime is 10661615623. The reversal of 10661615606 is 60651616601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10661615606² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10661615606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322355 + ... + 353886.

It is an arithmetic number, because the mean of its divisors is an integer number (1999309473).

Almost surely, 2^10661615606 is an apocalyptic number.

10661615606 is a deficient number, since it is larger than the sum of its proper divisors (5332860178).

10661615606 is an equidigital number, since it uses as much as digits as its factorization.

10661615606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684126.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 10661615606 in words is "ten billion, six hundred sixty-one million, six hundred fifteen thousand, six hundred six".