21330312010178 has 96 divisors (see below), whose sum is σ = 33646279867200. Its totient is φ = 10139534795520.

The previous prime is 21330312010177. The next prime is 21330312010307. The reversal of 21330312010178 is 87101021303312.

It is not an unprimeable number, because it can be changed into a prime (21330312010177) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 10389824600 + ... + 10389826652.

It is an arithmetic number, because the mean of its divisors is an integer number (350482081950).

Almost surely, 2^{21330312010178} is an apocalyptic number.

21330312010178 is a deficient number, since it is larger than the sum of its proper divisors (12315967857022).

21330312010178 is a wasteful number, since it uses less digits than its factorization.

21330312010178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 21330312010178 in words is "twenty-one trillion, three hundred thirty billion, three hundred twelve million, ten thousand, one hundred seventy-eight".