10661443403 has 8 divisors (see below), whose sum is σ = 11791867248. Its totient is φ = 9575349984.

The previous prime is 10661443369. The next prime is 10661443423. The reversal of 10661443403 is 30434416601.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10661443403 is a prime.

It is a super-2 number, since 2×10661443403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10661443403.

It is not an unprimeable number, because it can be changed into a prime (10661443423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11082101 + ... + 11083062.

It is an arithmetic number, because the mean of its divisors is an integer number (1473983406).

Almost surely, 2^10661443403 is an apocalyptic number.

10661443403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10661443403 is a deficient number, since it is larger than the sum of its proper divisors (1130423845).

10661443403 is a wasteful number, since it uses less digits than its factorization.

10661443403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22165213.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 10661443403 in words is "ten billion, six hundred sixty-one million, four hundred forty-three thousand, four hundred three".