6441670665500 has 48 divisors (see below), whose sum is σ = 16078409989824. Its totient is φ = 2208572798400.

The previous prime is 6441670665491. The next prime is 6441670665589. The reversal of 6441670665500 is 55660761446.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920235167 + ... + 920242166.

It is an arithmetic number, because the mean of its divisors is an integer number (334966874788).

Almost surely, 2^{6441670665500} is an apocalyptic number.

It is an amenable number.

6441670665500 is an abundant number, since it is smaller than the sum of its proper divisors (9636739324324).

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

6441670665500 is a wasteful number, since it uses less digits than its factorization.

6441670665500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840477359 (or 1840477347 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 6441670665500 in words is "six trillion, four hundred forty-one billion, six hundred seventy million, six hundred sixty-five thousand, five hundred".