27400750181 has 8 divisors (see below), whose sum is σ = 31711537920. Its totient is φ = 23189061168.

The previous prime is 27400750171. The next prime is 27400750213. The reversal of 27400750181 is 18105700472.

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

It is a de Polignac number, because none of the positive numbers 2^k-27400750181 is a prime.

It is a super-2 number, since 2×27400750181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27400750171) 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, 24774086 + ... + 24775191.

It is an arithmetic number, because the mean of its divisors is an integer number (3963942240).

Almost surely, 2^27400750181 is an apocalyptic number.

It is an amenable number.

27400750181 is a deficient number, since it is larger than the sum of its proper divisors (4310787739).

27400750181 is an equidigital number, since it uses as much as digits as its factorization.

27400750181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49549363.

The product of its (nonzero) digits is 15680, while the sum is 35.

The spelling of 27400750181 in words is "twenty-seven billion, four hundred million, seven hundred fifty thousand, one hundred eighty-one".