21484773540000 has 720 divisors, whose sum is σ = 79070126335200. Its totient is φ = 5525393664000.

The previous prime is 21484773539969. The next prime is 21484773540001. The reversal of 21484773540000 is 4537748412.

21484773540000 is a `hidden beast` number, since 2 + 148 + 4 + 77 + 35 + 400 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (21484773540001) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 6070858231 + ... + 6070861769.

It is an arithmetic number, because the mean of its divisors is an integer number (109819619910).

Almost surely, 2^{21484773540000} is an apocalyptic number.

21484773540000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21484773540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39535063167600).

21484773540000 is an abundant number, since it is smaller than the sum of its proper divisors (57585352795200).

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

21484773540000 is a wasteful number, since it uses less digits than its factorization.

21484773540000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767 (or 4741 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 21484773540000 in words is "twenty-one trillion, four hundred eighty-four billion, seven hundred seventy-three million, five hundred forty thousand".