21163316346603 has 12 divisors (see below), whose sum is σ = 30700433158200. Its totient is φ = 14048324440416.

The previous prime is 21163316346593. The next prime is 21163316346703. The reversal of 21163316346603 is 30664361336112.

It is a happy number.

21163316346603 is a `hidden beast` number, since 2 + 1 + 1 + 6 + 3 + 3 + 1 + 6 + 34 + 6 + 603 = 666.

It is not a de Polignac number, because 21163316346603 - 2¹⁶ = 21163316281067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21163316346703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5046091453 + ... + 5046095646.

It is an arithmetic number, because the mean of its divisors is an integer number (2558369429850).

Almost surely, 2^{21163316346603} is an apocalyptic number.

21163316346603 is a deficient number, since it is larger than the sum of its proper divisors (9537116811597).

21163316346603 is a wasteful number, since it uses less digits than its factorization.

21163316346603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10092187338 (or 10092187335 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 45.

The spelling of 21163316346603 in words is "twenty-one trillion, one hundred sixty-three billion, three hundred sixteen million, three hundred forty-six thousand, six hundred three".