21134161663204 has 24 divisors (see below), whose sum is σ = 37019746764000. Its totient is φ = 10557091720320.

The previous prime is 21134161663157. The next prime is 21134161663261. The reversal of 21134161663204 is 40236616143112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300640092 + ... + 300710380.

It is an arithmetic number, because the mean of its divisors is an integer number (1542489448500).

Almost surely, 2^{21134161663204} is an apocalyptic number.

It is an amenable number.

21134161663204 is a deficient number, since it is larger than the sum of its proper divisors (15885585100796).

21134161663204 is a wasteful number, since it uses less digits than its factorization.

21134161663204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140283 (or 140281 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 21134161663204 in words is "twenty-one trillion, one hundred thirty-four billion, one hundred sixty-one million, six hundred sixty-three thousand, two hundred four".