27261794163 has 4 divisors (see below), whose sum is σ = 36349058888. Its totient is φ = 18174529440.

The previous prime is 27261794129. The next prime is 27261794171. The reversal of 27261794163 is 36149716272.

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

It is not a de Polignac number, because 27261794163 - 2²⁶ = 27194685299 is a prime.

It is a super-3 number, since 3×27261794163³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27261794123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4543632358 + ... + 4543632363.

It is an arithmetic number, because the mean of its divisors is an integer number (9087264722).

Almost surely, 2^27261794163 is an apocalyptic number.

27261794163 is a deficient number, since it is larger than the sum of its proper divisors (9087264725).

27261794163 is an equidigital number, since it uses as much as digits as its factorization.

27261794163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9087264724.

The product of its digits is 762048, while the sum is 48.

The spelling of 27261794163 in words is "twenty-seven billion, two hundred sixty-one million, seven hundred ninety-four thousand, one hundred sixty-three".