200621715106656 has 48 divisors (see below), whose sum is σ = 529278394176000. Its totient is φ = 66537855255168.

The previous prime is 200621715106567. The next prime is 200621715106711. The reversal of 200621715106656 is 656601517126002.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5250758616 + ... + 5250796823.

It is an arithmetic number, because the mean of its divisors is an integer number (11026633212000).

Almost surely, 2^{200621715106656} is an apocalyptic number.

It is an amenable number.

200621715106656 is an abundant number, since it is smaller than the sum of its proper divisors (328656679069344).

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

200621715106656 is a wasteful number, since it uses less digits than its factorization.

200621715106656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501555651 (or 10501555643 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 200621715106656 in words is "two hundred trillion, six hundred twenty-one billion, seven hundred fifteen million, one hundred six thousand, six hundred fifty-six".