21716475670532 has 24 divisors (see below), whose sum is σ = 38387453532120. Its totient is φ = 10748813425920.

The previous prime is 21716475670511. The next prime is 21716475670543. The reversal of 21716475670532 is 23507657461712.

It can be written as a sum of positive squares in 4 ways, for example, as 5252228067076 + 16464247603456 = 2291774^2 + 4057616^2 .

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, 22223819 + ... + 23180402.

It is an arithmetic number, because the mean of its divisors is an integer number (1599477230505).

Almost surely, 2^{21716475670532} is an apocalyptic number.

It is an amenable number.

21716475670532 is a deficient number, since it is larger than the sum of its proper divisors (16670977861588).

21716475670532 is a wasteful number, since it uses less digits than its factorization.

21716475670532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45405431 (or 45405429 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 56.

The spelling of 21716475670532 in words is "twenty-one trillion, seven hundred sixteen billion, four hundred seventy-five million, six hundred seventy thousand, five hundred thirty-two".