21716683535350 has 48 divisors (see below), whose sum is σ = 41303740038768. Its totient is φ = 8492005491840.

The previous prime is 21716683535311. The next prime is 21716683535387. The reversal of 21716683535350 is 5353538661712.

It is a happy number.

It is a super-3 number, since 3×21716683535350³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21716683535291 and 21716683535300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14058324 + ... + 15526423.

It is an arithmetic number, because the mean of its divisors is an integer number (860494584141).

Almost surely, 2^{21716683535350} is an apocalyptic number.

21716683535350 is a deficient number, since it is larger than the sum of its proper divisors (19587056503418).

21716683535350 is a wasteful number, since it uses less digits than its factorization.

21716683535350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29585089 (or 29585084 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 21716683535350 in words is "twenty-one trillion, seven hundred sixteen billion, six hundred eighty-three million, five hundred thirty-five thousand, three hundred fifty".