200451621544645 has 32 divisors (see below), whose sum is σ = 256987160801280. Its totient is φ = 149650266934080.

The previous prime is 200451621544591. The next prime is 200451621544651. The reversal of 200451621544645 is 546445126154002.

It is not a de Polignac number, because 200451621544645 - 2¹¹ = 200451621542597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291574660 + ... + 292261330.

It is an arithmetic number, because the mean of its divisors is an integer number (8030848775040).

Almost surely, 2^{200451621544645} is an apocalyptic number.

It is an amenable number.

200451621544645 is a deficient number, since it is larger than the sum of its proper divisors (56535539256635).

200451621544645 is a wasteful number, since it uses less digits than its factorization.

200451621544645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732625.

The product of its (nonzero) digits is 4608000, while the sum is 49.

Adding to 200451621544645 its reverse (546445126154002), we get a palindrome (746896747698647).

The spelling of 200451621544645 in words is "two hundred trillion, four hundred fifty-one billion, six hundred twenty-one million, five hundred forty-four thousand, six hundred forty-five".