10661078003 has 4 divisors (see below), whose sum is σ = 10661429160. Its totient is φ = 10660726848.

The previous prime is 10661077981. The next prime is 10661078041. The reversal of 10661078003 is 30087016601.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10661078003 is a prime.

It is a super-2 number, since 2×10661078003² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10661078083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125225 + ... + 192362.

It is an arithmetic number, because the mean of its divisors is an integer number (2665357290).

Almost surely, 2^10661078003 is an apocalyptic number.

10661078003 is a deficient number, since it is larger than the sum of its proper divisors (351157).

10661078003 is an equidigital number, since it uses as much as digits as its factorization.

10661078003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351156.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 10661078003 in words is "ten billion, six hundred sixty-one million, seventy-eight thousand, three".