21655042410316 has 48 divisors (see below), whose sum is σ = 44084528167680. Its totient is φ = 9115068703680.

The previous prime is 21655042410299. The next prime is 21655042410371. The reversal of 21655042410316 is 61301424055612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4205175 + ... + 7809838.

It is an arithmetic number, because the mean of its divisors is an integer number (918427670160).

Almost surely, 2^{21655042410316} is an apocalyptic number.

It is an amenable number.

21655042410316 is an abundant number, since it is smaller than the sum of its proper divisors (22429485757364).

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

21655042410316 is a wasteful number, since it uses less digits than its factorization.

21655042410316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016174 (or 12016172 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 21655042410316 its reverse (61301424055612), we get a palindrome (82956466465928).

The spelling of 21655042410316 in words is "twenty-one trillion, six hundred fifty-five billion, forty-two million, four hundred ten thousand, three hundred sixteen".