207001666000 has 40 divisors (see below), whose sum is σ = 500530033224. Its totient is φ = 82800665600.

The previous prime is 207001665989. The next prime is 207001666057. The reversal of 207001666000 is 666100702.

It can be written as a sum of positive squares in 4 ways, for example, as 63445549456 + 143556116544 = 251884^2 + 378888^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 207001666000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51748417 + ... + 51752416.

Almost surely, 2^207001666000 is an apocalyptic number.

207001666000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207001666000 is an abundant number, since it is smaller than the sum of its proper divisors (293528367224).

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

207001666000 is a wasteful number, since it uses less digits than its factorization.

207001666000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103500856 (or 103500840 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 207001666000 its reverse (666100702), we get a palindrome (207667766702).

The spelling of 207001666000 in words is "two hundred seven billion, one million, six hundred sixty-six thousand".