10216100066 has 4 divisors (see below), whose sum is σ = 15324150102. Its totient is φ = 5108050032.

The previous prime is 10216100047. The next prime is 10216100099. The reversal of 10216100066 is 66000161201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9027850225 + 1188249841 = 95015^2 + 34471^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2554025015 + ... + 2554025018.

Almost surely, 2^10216100066 is an apocalyptic number.

10216100066 is a deficient number, since it is larger than the sum of its proper divisors (5108050036).

10216100066 is an equidigital number, since it uses as much as digits as its factorization.

10216100066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108050035.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 10216100066 its reverse (66000161201), we get a palindrome (76216261267).

The spelling of 10216100066 in words is "ten billion, two hundred sixteen million, one hundred thousand, sixty-six".