66702446240 has 96 divisors (see below), whose sum is σ = 161436312576. Its totient is φ = 26030269440.

The previous prime is 66702446231. The next prime is 66702446323. The reversal of 66702446240 is 4264420766.

66702446240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 6468929 + ... + 6479231.

It is an arithmetic number, because the mean of its divisors is an integer number (1681628256).

Almost surely, 2^66702446240 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 66702446240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80718156288).

66702446240 is an abundant number, since it is smaller than the sum of its proper divisors (94733866336).

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

66702446240 is a wasteful number, since it uses less digits than its factorization.

66702446240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11302 (or 11294 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 66702446240 in words is "sixty-six billion, seven hundred two million, four hundred forty-six thousand, two hundred forty".