21118465450326 has 8 divisors (see below), whose sum is σ = 42236930900664. Its totient is φ = 7039488483440.

The previous prime is 21118465450319. The next prime is 21118465450331. The reversal of 21118465450326 is 62305456481112.

It is a sphenic number, since it is the product of 3 distinct primes.

21118465450326 is an admirable number.

It is a super-2 number, since 2×21118465450326² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759872120855 + ... + 1759872120866.

It is an arithmetic number, because the mean of its divisors is an integer number (5279616362583).

Almost surely, 2^{21118465450326} is an apocalyptic number.

21118465450326 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21118465450326 is a wasteful number, since it uses less digits than its factorization.

21118465450326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519744241726.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 21118465450326 in words is "twenty-one trillion, one hundred eighteen billion, four hundred sixty-five million, four hundred fifty thousand, three hundred twenty-six".