21466152660216 has 32 divisors (see below), whose sum is σ = 58544052710400. Its totient is φ = 6504894745440.

The previous prime is 21466152660101. The next prime is 21466152660229. The reversal of 21466152660216 is 61206625166412.

It is a happy number.

It is a congruent number.

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, 40655591896 + ... + 40655592423.

It is an arithmetic number, because the mean of its divisors is an integer number (1829501647200).

Almost surely, 2^{21466152660216} is an apocalyptic number.

It is an amenable number.

21466152660216 is an abundant number, since it is smaller than the sum of its proper divisors (37077900050184).

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

21466152660216 is a wasteful number, since it uses less digits than its factorization.

21466152660216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81311184339 (or 81311184335 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 21466152660216 in words is "twenty-one trillion, four hundred sixty-six billion, one hundred fifty-two million, six hundred sixty thousand, two hundred sixteen".