10861489663 has 4 divisors (see below), whose sum is σ = 11333728368. Its totient is φ = 10389250960.

The previous prime is 10861489591. The next prime is 10861489679. The reversal of 10861489663 is 36698416801.

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-10861489663 is a prime.

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 10861489663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10861489693) 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, 236119318 + ... + 236119363.

It is an arithmetic number, because the mean of its divisors is an integer number (2833432092).

Almost surely, 2^10861489663 is an apocalyptic number.

10861489663 is a deficient number, since it is larger than the sum of its proper divisors (472238705).

10861489663 is an equidigital number, since it uses as much as digits as its factorization.

10861489663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472238704.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 10861489663 in words is "ten billion, eight hundred sixty-one million, four hundred eighty-nine thousand, six hundred sixty-three".