275020160809 has 12 divisors (see below), whose sum is σ = 285548434444. Its totient is φ = 264867527232.

The previous prime is 275020160797. The next prime is 275020160879. The reversal of 275020160809 is 908061020572.

It can be written as a sum of positive squares in 6 ways, for example, as 17130883225 + 257889277584 = 130885^2 + 507828^2 .

It is not a de Polignac number, because 275020160809 - 2⁹ = 275020160297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275020160879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77982 + ... + 745735.

Almost surely, 2^275020160809 is an apocalyptic number.

275020160809 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

275020160809 is a deficient number, since it is larger than the sum of its proper divisors (10528273635).

275020160809 is an equidigital number, since it uses as much as digits as its factorization.

275020160809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824172 (or 824143 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 275020160809 in words is "two hundred seventy-five billion, twenty million, one hundred sixty thousand, eight hundred nine".