27843195261 has 16 divisors (see below), whose sum is σ = 44272410624. Its totient is φ = 15218640624.

The previous prime is 27843195199. The next prime is 27843195269. The reversal of 27843195261 is 16259134872.

It is not a de Polignac number, because 27843195261 - 2¹³ = 27843187069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27843195261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27843195269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28822701 + ... + 28823666.

It is an arithmetic number, because the mean of its divisors is an integer number (2767025664).

Almost surely, 2^27843195261 is an apocalyptic number.

27843195261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27843195261 is a deficient number, since it is larger than the sum of its proper divisors (16429215363).

27843195261 is a wasteful number, since it uses less digits than its factorization.

27843195261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57646400.

The product of its digits is 725760, while the sum is 48.

The spelling of 27843195261 in words is "twenty-seven billion, eight hundred forty-three million, one hundred ninety-five thousand, two hundred sixty-one".