21517673135334 has 16 divisors (see below), whose sum is σ = 45300364495680. Its totient is φ = 6795054674280.

The previous prime is 21517673135317. The next prime is 21517673135339. The reversal of 21517673135334 is 43353137671512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21517673135339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94375759252 + ... + 94375759479.

It is an arithmetic number, because the mean of its divisors is an integer number (2831272780980).

Almost surely, 2^{21517673135334} is an apocalyptic number.

21517673135334 is an abundant number, since it is smaller than the sum of its proper divisors (23782691360346).

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

21517673135334 is a wasteful number, since it uses less digits than its factorization.

21517673135334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188751518755.

The product of its digits is 4762800, while the sum is 51.

The spelling of 21517673135334 in words is "twenty-one trillion, five hundred seventeen billion, six hundred seventy-three million, one hundred thirty-five thousand, three hundred thirty-four".