27750418161 has 8 divisors (see below), whose sum is σ = 37001328384. Its totient is φ = 18499893360.

The previous prime is 27750418127. The next prime is 27750418177. The reversal of 27750418161 is 16181405772.

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-27750418161 is a prime.

It is a super-2 number, since 2×27750418161² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27750418181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220491 + ... + 322671.

It is an arithmetic number, because the mean of its divisors is an integer number (4625166048).

Almost surely, 2^27750418161 is an apocalyptic number.

It is an amenable number.

27750418161 is a deficient number, since it is larger than the sum of its proper divisors (9250910223).

27750418161 is a wasteful number, since it uses less digits than its factorization.

27750418161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192711.

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 27750418161 in words is "twenty-seven billion, seven hundred fifty million, four hundred eighteen thousand, one hundred sixty-one".