10661443604 has 48 divisors (see below), whose sum is σ = 21701694336. Its totient is φ = 4488220800.

The previous prime is 10661443603. The next prime is 10661443619. The reversal of 10661443604 is 40634416601.

It is a happy number.

10661443604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10661443604² (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 (10661443603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1398467 + ... + 1406069.

It is an arithmetic number, because the mean of its divisors is an integer number (452118632).

Almost surely, 2^10661443604 is an apocalyptic number.

10661443604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10661443604 is an abundant number, since it is smaller than the sum of its proper divisors (11040250732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10661443604 is a wasteful number, since it uses less digits than its factorization.

10661443604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8496 (or 8494 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 10661443604 in words is "ten billion, six hundred sixty-one million, four hundred forty-three thousand, six hundred four".