10661239803 has 16 divisors (see below), whose sum is σ = 14472288000. Its totient is φ = 6979234080.

The previous prime is 10661239759. The next prime is 10661239807. The reversal of 10661239803 is 30893216601.

It is a de Polignac number, because none of the positive numbers 2^k-10661239803 is a prime.

It is a super-2 number, since 2×10661239803² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10661239807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60988 + ... + 158246.

It is an arithmetic number, because the mean of its divisors is an integer number (904518000).

Almost surely, 2^10661239803 is an apocalyptic number.

10661239803 is a deficient number, since it is larger than the sum of its proper divisors (3811048197).

10661239803 is an equidigital number, since it uses as much as digits as its factorization.

10661239803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97922.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 10661239803 in words is "ten billion, six hundred sixty-one million, two hundred thirty-nine thousand, eight hundred three".