21073674647200 has 108 divisors (see below), whose sum is σ = 59845472953182. Its totient is φ = 7225259865600.

The previous prime is 21073674647183. The next prime is 21073674647243. The reversal of 21073674647200 is 274647637012.

It can be written as a sum of positive squares in 3 ways, for example, as 12230211997584 + 8843462649616 = 3497172^2 + 2973796^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 268757671 + ... + 268836070.

Almost surely, 2^{21073674647200} is an apocalyptic number.

21073674647200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21073674647200 is an abundant number, since it is smaller than the sum of its proper divisors (38771798305982).

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

21073674647200 is a wasteful number, since it uses less digits than its factorization.

21073674647200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537593775 (or 537593755 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 49.

The spelling of 21073674647200 in words is "twenty-one trillion, seventy-three billion, six hundred seventy-four million, six hundred forty-seven thousand, two hundred".