10266651666 has 40 divisors (see below), whose sum is σ = 23059701324. Its totient is φ = 3414065760.

The previous prime is 10266651649. The next prime is 10266651667. The reversal of 10266651666 is 66615666201.

It can be written as a sum of positive squares in 2 ways, for example, as 10104471441 + 162180225 = 100521^2 + 12735^2 .

It is a super-4 number, since 4×10266651666⁴ (a number of 41 digits) contains 4444 as substring.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (10266651667) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7065 + ... + 143468.

Almost surely, 2^10266651666 is an apocalyptic number.

10266651666 is an abundant number, since it is smaller than the sum of its proper divisors (12793049658).

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

10266651666 is a wasteful number, since it uses less digits than its factorization.

10266651666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150968 (or 150959 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 10266651666 in words is "ten billion, two hundred sixty-six million, six hundred fifty-one thousand, six hundred sixty-six".