10163855661 has 4 divisors (see below), whose sum is σ = 13551807552. Its totient is φ = 6775903772.

The previous prime is 10163855629. The next prime is 10163855677. The reversal of 10163855661 is 16655836101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10163855661 - 2⁵ = 10163855629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10163855861) 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, 1693975941 + ... + 1693975946.

It is an arithmetic number, because the mean of its divisors is an integer number (3387951888).

Almost surely, 2^10163855661 is an apocalyptic number.

It is an amenable number.

10163855661 is a deficient number, since it is larger than the sum of its proper divisors (3387951891).

10163855661 is an equidigital number, since it uses as much as digits as its factorization.

10163855661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387951890.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 10163855661 in words is "ten billion, one hundred sixty-three million, eight hundred fifty-five thousand, six hundred sixty-one".