21066741360320 has 28 divisors (see below), whose sum is σ = 50165177865024. Its totient is φ = 8426696544000.

The previous prime is 21066741360299. The next prime is 21066741360341. The reversal of 21066741360320 is 2306314766012.

It is an interprime number because it is at equal distance from previous prime (21066741360299) and next prime (21066741360341).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32916783056 + ... + 32916783695.

Almost surely, 2^{21066741360320} is an apocalyptic number.

21066741360320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21066741360320 is an abundant number, since it is smaller than the sum of its proper divisors (29098436504704).

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

21066741360320 is an equidigital number, since it uses as much as digits as its factorization.

21066741360320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65833566768 (or 65833566758 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 21066741360320 in words is "twenty-one trillion, sixty-six billion, seven hundred forty-one million, three hundred sixty thousand, three hundred twenty".