387284145666 has 64 divisors (see below), whose sum is σ = 849043399680. Its totient is φ = 116795389760.

The previous prime is 387284145631. The next prime is 387284145673. The reversal of 387284145666 is 666541482783.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65872915 + ... + 65878793.

It is an arithmetic number, because the mean of its divisors is an integer number (13266303120).

Almost surely, 2^387284145666 is an apocalyptic number.

387284145666 is an abundant number, since it is smaller than the sum of its proper divisors (461759254014).

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

387284145666 is a wasteful number, since it uses less digits than its factorization.

387284145666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10519.

The product of its digits is 46448640, while the sum is 60.

The spelling of 387284145666 in words is "three hundred eighty-seven billion, two hundred eighty-four million, one hundred forty-five thousand, six hundred sixty-six".