27490000261 has 8 divisors (see below), whose sum is σ = 28940895200. Its totient is φ = 26039510640.

The previous prime is 27490000259. The next prime is 27490000267. The reversal of 27490000261 is 16200009472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27490000261 - 2¹ = 27490000259 is a prime.

It is a super-3 number, since 3×27490000261³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27490000267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43195 + ... + 238423.

It is an arithmetic number, because the mean of its divisors is an integer number (3617611900).

Almost surely, 2^27490000261 is an apocalyptic number.

27490000261 is the 74149-th centered decagonal number.

It is an amenable number.

27490000261 is a deficient number, since it is larger than the sum of its proper divisors (1450894939).

27490000261 is a wasteful number, since it uses less digits than its factorization.

27490000261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202659.

The product of its (nonzero) digits is 6048, while the sum is 31.

The spelling of 27490000261 in words is "twenty-seven billion, four hundred ninety million, two hundred sixty-one", and thus it is an aban number.