21716541001024 has 14 divisors (see below), whose sum is σ = 43093761049034. Its totient is φ = 10858270500480.

The previous prime is 21716541000991. The next prime is 21716541001037. The reversal of 21716541001024 is 42010014561712.

It can be written as a sum of positive squares in only one way, i.e., 12876384903424 + 8840156097600 = 3588368^2 + 2973240^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169660476507 + ... + 169660476634.

Almost surely, 2^{21716541001024} is an apocalyptic number.

It is an amenable number.

21716541001024 is a deficient number, since it is larger than the sum of its proper divisors (21377220048010).

21716541001024 is an equidigital number, since it uses as much as digits as its factorization.

21716541001024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339320953153 (or 339320953143 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 21716541001024 its reverse (42010014561712), we get a palindrome (63726555562736).

The spelling of 21716541001024 in words is "twenty-one trillion, seven hundred sixteen billion, five hundred forty-one million, one thousand, twenty-four".