21466304654740 has 96 divisors (see below), whose sum is σ = 52219339200000. Its totient is φ = 7325705349120.

The previous prime is 21466304654713. The next prime is 21466304654741. The reversal of 21466304654740 is 4745640366412.

It is a super-2 number, since 2×21466304654740² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21466304654741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6917740 + ... + 9528259.

It is an arithmetic number, because the mean of its divisors is an integer number (543951450000).

Almost surely, 2^{21466304654740} is an apocalyptic number.

21466304654740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21466304654740 is an abundant number, since it is smaller than the sum of its proper divisors (30753034545260).

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

21466304654740 is a wasteful number, since it uses less digits than its factorization.

21466304654740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16446385 (or 16446383 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 52.

The spelling of 21466304654740 in words is "twenty-one trillion, four hundred sixty-six billion, three hundred four million, six hundred fifty-four thousand, seven hundred forty".