10661121445 has 16 divisors (see below), whose sum is σ = 14502579840. Its totient is φ = 7458467904.

The previous prime is 10661121313. The next prime is 10661121461. The reversal of 10661121445 is 54412116601.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10661121445 is a prime.

It is a super-3 number, since 3×10661121445³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4315009 + ... + 4317478.

It is an arithmetic number, because the mean of its divisors is an integer number (906411240).

Almost surely, 2^10661121445 is an apocalyptic number.

It is an amenable number.

10661121445 is a deficient number, since it is larger than the sum of its proper divisors (3841458395).

10661121445 is a wasteful number, since it uses less digits than its factorization.

10661121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8632524.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 10661121445 in words is "ten billion, six hundred sixty-one million, one hundred twenty-one thousand, four hundred forty-five".