387207218566 has 48 divisors (see below), whose sum is σ = 699478824240. Its totient is φ = 160098993600.

The previous prime is 387207218543. The next prime is 387207218569. The reversal of 387207218566 is 665812702783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387207218569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3645081 + ... + 3749803.

It is an arithmetic number, because the mean of its divisors is an integer number (14572475505).

Almost surely, 2^387207218566 is an apocalyptic number.

387207218566 is a deficient number, since it is larger than the sum of its proper divisors (312271605674).

387207218566 is a wasteful number, since it uses less digits than its factorization.

387207218566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106069 (or 106062 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 387207218566 in words is "three hundred eighty-seven billion, two hundred seven million, two hundred eighteen thousand, five hundred sixty-six".