21344061458500 has 96 divisors (see below), whose sum is σ = 50856975187200. Its totient is φ = 7760900192000.

The previous prime is 21344061458431. The next prime is 21344061458519. The reversal of 21344061458500 is 585416044312.

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 31 ways as a sum of consecutive naturals, for example, 77704401 + ... + 77978599.

It is an arithmetic number, because the mean of its divisors is an integer number (529760158200).

Almost surely, 2^{21344061458500} is an apocalyptic number.

21344061458500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21344061458500 is an abundant number, since it is smaller than the sum of its proper divisors (29512913728700).

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

21344061458500 is a wasteful number, since it uses less digits than its factorization.

21344061458500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288382 (or 288370 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 21344061458500 in words is "twenty-one trillion, three hundred forty-four billion, sixty-one million, four hundred fifty-eight thousand, five hundred".