66015333650 has 96 divisors (see below), whose sum is σ = 142071656832. Its totient is φ = 22353868800.

The previous prime is 66015333583. The next prime is 66015333689. The reversal of 66015333650 is 5633351066.

66015333650 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 47 ways as a sum of consecutive naturals, for example, 18908405 + ... + 18911895.

It is an arithmetic number, because the mean of its divisors is an integer number (1479913092).

Almost surely, 2^66015333650 is an apocalyptic number.

66015333650 is an abundant number, since it is smaller than the sum of its proper divisors (76056323182).

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

66015333650 is a wasteful number, since it uses less digits than its factorization.

66015333650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164 (or 4159 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 38.

The spelling of 66015333650 in words is "sixty-six billion, fifteen million, three hundred thirty-three thousand, six hundred fifty".