21354665460316 has 48 divisors (see below), whose sum is σ = 38011929705792. Its totient is φ = 10494381542400.

The previous prime is 21354665460299. The next prime is 21354665460367. The reversal of 21354665460316 is 61306456645312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2807234985 + ... + 2807242591.

It is an arithmetic number, because the mean of its divisors is an integer number (791915202204).

Almost surely, 2^{21354665460316} is an apocalyptic number.

It is an amenable number.

21354665460316 is a deficient number, since it is larger than the sum of its proper divisors (16657264245476).

21354665460316 is a wasteful number, since it uses less digits than its factorization.

21354665460316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14830 (or 14828 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 52.

The spelling of 21354665460316 in words is "twenty-one trillion, three hundred fifty-four billion, six hundred sixty-five million, four hundred sixty thousand, three hundred sixteen".