200621715106645 has 16 divisors (see below), whose sum is σ = 279801714049920. Its totient is φ = 135237495121344.

The previous prime is 200621715106567. The next prime is 200621715106711. The reversal of 200621715106645 is 546601517126002.

It is not a de Polignac number, because 200621715106645 - 2¹⁹ = 200621714582357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200621715106595 and 200621715106604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48576684402 + ... + 48576688531.

It is an arithmetic number, because the mean of its divisors is an integer number (17487607128120).

Almost surely, 2^{200621715106645} is an apocalyptic number.

It is an amenable number.

200621715106645 is a deficient number, since it is larger than the sum of its proper divisors (79179998943275).

200621715106645 is an equidigital number, since it uses as much as digits as its factorization.

200621715106645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97153373004.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 200621715106645 in words is "two hundred trillion, six hundred twenty-one billion, seven hundred fifteen million, one hundred six thousand, six hundred forty-five".