275904921601 has 4 divisors (see below), whose sum is σ = 283361811412. Its totient is φ = 268448031792.

The previous prime is 275904921587. The next prime is 275904921613. The reversal of 275904921601 is 106129409572.

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

It can be written as a sum of positive squares in 2 ways, for example, as 257551175025 + 18353746576 = 507495^2 + 135476^2 .

It is a cyclic number.

It is not a de Polignac number, because 275904921601 - 2¹³ = 275904913409 is a prime.

It is a super-2 number, since 2×275904921601² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275904921671) 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, 3728444850 + ... + 3728444923.

It is an arithmetic number, because the mean of its divisors is an integer number (70840452853).

Almost surely, 2^275904921601 is an apocalyptic number.

It is an amenable number.

275904921601 is a deficient number, since it is larger than the sum of its proper divisors (7456889811).

275904921601 is an equidigital number, since it uses as much as digits as its factorization.

275904921601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456889810.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 275904921601 in words is "two hundred seventy-five billion, nine hundred four million, nine hundred twenty-one thousand, six hundred one".