21610424166316 has 24 divisors (see below), whose sum is σ = 40114735055136. Its totient is φ = 10151353524480.

The previous prime is 21610424166301. The next prime is 21610424166391. The reversal of 21610424166316 is 61366142401612.

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, 285240720 + ... + 285316471.

It is an arithmetic number, because the mean of its divisors is an integer number (1671447293964).

Almost surely, 2^{21610424166316} is an apocalyptic number.

It is an amenable number.

21610424166316 is a deficient number, since it is larger than the sum of its proper divisors (18504310888820).

21610424166316 is a wasteful number, since it uses less digits than its factorization.

21610424166316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570557769 (or 570557767 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

Adding to 21610424166316 its reverse (61366142401612), we get a palindrome (82976566567928).

The spelling of 21610424166316 in words is "twenty-one trillion, six hundred ten billion, four hundred twenty-four million, one hundred sixty-six thousand, three hundred sixteen".