10166557201 has 4 divisors (see below), whose sum is σ = 10167388900. Its totient is φ = 10165725504.

The previous prime is 10166557189. The next prime is 10166557213. The reversal of 10166557201 is 10275566101.

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

It is an interprime number because it is at equal distance from previous prime (10166557189) and next prime (10166557213).

It can be written as a sum of positive squares in 2 ways, for example, as 3022250625 + 7144306576 = 54975^2 + 84524^2 .

It is a cyclic number.

It is not a de Polignac number, because 10166557201 - 2²⁹ = 9629686289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10166557901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397236 + ... + 422053.

It is an arithmetic number, because the mean of its divisors is an integer number (2541847225).

Almost surely, 2^10166557201 is an apocalyptic number.

It is an amenable number.

10166557201 is a deficient number, since it is larger than the sum of its proper divisors (831699).

10166557201 is an equidigital number, since it uses as much as digits as its factorization.

10166557201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831698.

The product of its (nonzero) digits is 12600, while the sum is 34.

The spelling of 10166557201 in words is "ten billion, one hundred sixty-six million, five hundred fifty-seven thousand, two hundred one".