21163316346602 has 4 divisors (see below), whose sum is σ = 31744974519906. Its totient is φ = 10581658173300.

The previous prime is 21163316346593. The next prime is 21163316346703. The reversal of 21163316346602 is 20664361336112.

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

It can be written as a sum of positive squares in only one way, i.e., 20956445108041 + 206871238561 = 4577821^2 + 454831^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5290829086649 + ... + 5290829086652.

Almost surely, 2^{21163316346602} is an apocalyptic number.

21163316346602 is a deficient number, since it is larger than the sum of its proper divisors (10581658173304).

21163316346602 is a wasteful number, since it uses less digits than its factorization.

21163316346602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10581658173303.

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 21163316346602 in words is "twenty-one trillion, one hundred sixty-three billion, three hundred sixteen million, three hundred forty-six thousand, six hundred two".