27533948081 has 4 divisors (see below), whose sum is σ = 27687769200. Its totient is φ = 27380126964.

The previous prime is 27533948003. The next prime is 27533948089. The reversal of 27533948081 is 18084933572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27533948081 is a prime.

It is a super-2 number, since 2×27533948081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27533948089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76910291 + ... + 76910648.

It is an arithmetic number, because the mean of its divisors is an integer number (6921942300).

Almost surely, 2^27533948081 is an apocalyptic number.

It is an amenable number.

27533948081 is a deficient number, since it is larger than the sum of its proper divisors (153821119).

27533948081 is a wasteful number, since it uses less digits than its factorization.

27533948081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153821118.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 27533948081 in words is "twenty-seven billion, five hundred thirty-three million, nine hundred forty-eight thousand, eighty-one".