621446008216 has 32 divisors (see below), whose sum is σ = 1273199867280. Its totient is φ = 282017612800.

The previous prime is 621446008159. The next prime is 621446008223. The reversal of 621446008216 is 612800644126.

It is a super-2 number, since 2×621446008216² (a number of 24 digits) contains 22 as substring.

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, 5668465 + ... + 5777056.

Almost surely, 2^621446008216 is an apocalyptic number.

It is an amenable number.

621446008216 is an abundant number, since it is smaller than the sum of its proper divisors (651753859064).

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

621446008216 is a wasteful number, since it uses less digits than its factorization.

621446008216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11446155 (or 11446151 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 621446008216 in words is "six hundred twenty-one billion, four hundred forty-six million, eight thousand, two hundred sixteen".