21467799484560 has 1920 divisors, whose sum is σ = 88908134515200. Its totient is φ = 4572138700800.

The previous prime is 21467799484513. The next prime is 21467799484577. The reversal of 21467799484560 is 6548499776412.

21467799484560 is a `hidden beast` number, since 2 + 1 + 4 + 6 + 7 + 7 + 99 + 484 + 56 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 61512319266 + ... + 61512319614.

It is an arithmetic number, because the mean of its divisors is an integer number (46306320060).

Almost surely, 2^{21467799484560} is an apocalyptic number.

21467799484560 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 21467799484560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44454067257600).

21467799484560 is an abundant number, since it is smaller than the sum of its proper divisors (67440335030640).

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

21467799484560 is a wasteful number, since it uses less digits than its factorization.

21467799484560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 731566080, while the sum is 72.

The spelling of 21467799484560 in words is "twenty-one trillion, four hundred sixty-seven billion, seven hundred ninety-nine million, four hundred eighty-four thousand, five hundred sixty".