66444062000 has 80 divisors (see below), whose sum is σ = 162252945504. Its totient is φ = 26314400000.

The previous prime is 66444061987. The next prime is 66444062017. The reversal of 66444062000 is 26044466.

It is a tau number, because it is divible by the number of its divisors (80).

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, 37535 + ... + 366465.

Almost surely, 2^66444062000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66444062000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81126472752).

66444062000 is an abundant number, since it is smaller than the sum of its proper divisors (95808883504).

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

66444062000 is a wasteful number, since it uses less digits than its factorization.

66444062000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329055 (or 329039 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 66444062000 in words is "sixty-six billion, four hundred forty-four million, sixty-two thousand".