10210385666 has 8 divisors (see below), whose sum is σ = 16493699964. Its totient is φ = 4712485680.

The previous prime is 10210385663. The next prime is 10210385683. The reversal of 10210385666 is 66658301201.

It can be written as a sum of positive squares in 2 ways, for example, as 10204030225 + 6355441 = 101015^2 + 2521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (10210385663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 196353545 + ... + 196353596.

Almost surely, 2^10210385666 is an apocalyptic number.

10210385666 is a deficient number, since it is larger than the sum of its proper divisors (6283314298).

10210385666 is a wasteful number, since it uses less digits than its factorization.

10210385666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392707156.

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 10210385666 its reverse (66658301201), we get a palindrome (76868686867).

The spelling of 10210385666 in words is "ten billion, two hundred ten million, three hundred eighty-five thousand, six hundred sixty-six".