21354310616343 has 32 divisors (see below), whose sum is σ = 28722988800000. Its totient is φ = 14111528019456.

The previous prime is 21354310616269. The next prime is 21354310616363. The reversal of 21354310616343 is 34361601345312.

It is not a de Polignac number, because 21354310616343 - 2¹⁴ = 21354310599959 is a prime.

It is a super-3 number, since 3×21354310616343³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21354310616295 and 21354310616304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21354310616363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233976783 + ... + 234068031.

It is an arithmetic number, because the mean of its divisors is an integer number (897593400000).

Almost surely, 2^{21354310616343} is an apocalyptic number.

21354310616343 is a deficient number, since it is larger than the sum of its proper divisors (7368678183657).

21354310616343 is a wasteful number, since it uses less digits than its factorization.

21354310616343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92911.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 21354310616343 in words is "twenty-one trillion, three hundred fifty-four billion, three hundred ten million, six hundred sixteen thousand, three hundred forty-three".