10416420666 has 20 divisors (see below), whose sum is σ = 23340498522. Its totient is φ = 3472140168.

The previous prime is 10416420661. The next prime is 10416420689. The reversal of 10416420666 is 66602461401.

It can be written as a sum of positive squares in only one way, i.e., 8027264025 + 2389156641 = 89595^2 + 48879^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10416420666.

It is not an unprimeable number, because it can be changed into a prime (10416420661) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32149285 + ... + 32149608.

Almost surely, 2^10416420666 is an apocalyptic number.

10416420666 is an abundant number, since it is smaller than the sum of its proper divisors (12924077856).

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

10416420666 is an equidigital number, since it uses as much as digits as its factorization.

10416420666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64298907 (or 64298898 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 10416420666 in words is "ten billion, four hundred sixteen million, four hundred twenty thousand, six hundred sixty-six".