21324056363754 has 32 divisors (see below), whose sum is σ = 42904088035200. Its totient is φ = 7065357422592.

The previous prime is 21324056363719. The next prime is 21324056363759. The reversal of 21324056363754 is 45736365042312.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21324056363697 and 21324056363706.

It is not an unprimeable number, because it can be changed into a prime (21324056363759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122430522 + ... + 122604570.

It is an arithmetic number, because the mean of its divisors is an integer number (1340752751100).

Almost surely, 2^{21324056363754} is an apocalyptic number.

21324056363754 is an abundant number, since it is smaller than the sum of its proper divisors (21580031671446).

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

21324056363754 is a wasteful number, since it uses less digits than its factorization.

21324056363754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296494.

The product of its (nonzero) digits is 10886400, while the sum is 51.

The spelling of 21324056363754 in words is "twenty-one trillion, three hundred twenty-four billion, fifty-six million, three hundred sixty-three thousand, seven hundred fifty-four".