21163523153202 has 24 divisors (see below), whose sum is σ = 47847965390784. Its totient is φ = 6747789990744.

The previous prime is 21163523153173. The next prime is 21163523153219. The reversal of 21163523153202 is 20235132536112.

21163523153202 is a `hidden beast` number, since 2 + 1 + 1 + 63 + 523 + 1 + 53 + 20 + 2 = 666.

It is a super-2 number, since 2×21163523153202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25559810158 + ... + 25559810985.

It is an arithmetic number, because the mean of its divisors is an integer number (1993665224616).

Almost surely, 2^{21163523153202} is an apocalyptic number.

21163523153202 is an abundant number, since it is smaller than the sum of its proper divisors (26684442237582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21163523153202 is a wasteful number, since it uses less digits than its factorization.

21163523153202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51119621174 (or 51119621171 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 21163523153202 its reverse (20235132536112), we get a palindrome (41398655689314).

The spelling of 21163523153202 in words is "twenty-one trillion, one hundred sixty-three billion, five hundred twenty-three million, one hundred fifty-three thousand, two hundred two".