10021666275 has 36 divisors (see below), whose sum is σ = 18614740872. Its totient is φ = 5344885440.

The previous prime is 10021666241. The next prime is 10021666351. The reversal of 10021666275 is 57266612001.

It is a happy number.

10021666275 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10021666275 - 2⁶ = 10021666211 is a prime.

It is a super-3 number, since 3×10021666275³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 818754 + ... + 830903.

Almost surely, 2^10021666275 is an apocalyptic number.

10021666275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10021666275 is a deficient number, since it is larger than the sum of its proper divisors (8593074597).

10021666275 is an equidigital number, since it uses as much as digits as its factorization.

10021666275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649682 (or 1649665 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 10021666275 in words is "ten billion, twenty-one million, six hundred sixty-six thousand, two hundred seventy-five".