10217643266 has 8 divisors (see below), whose sum is σ = 15615643644. Its totient is φ = 5012428720.

The previous prime is 10217643253. The next prime is 10217643311. The reversal of 10217643266 is 66234671201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8222681041 + 1994962225 = 90679^2 + 44665^2 .

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

It is a super-2 number, since 2×10217643266² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48196325 + ... + 48196536.

Almost surely, 2^10217643266 is an apocalyptic number.

10217643266 is a deficient number, since it is larger than the sum of its proper divisors (5398000378).

10217643266 is an equidigital number, since it uses as much as digits as its factorization.

10217643266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96392916.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 10217643266 in words is "ten billion, two hundred seventeen million, six hundred forty-three thousand, two hundred sixty-six".