27121758133 has 2 divisors, whose sum is σ = 27121758134. Its totient is φ = 27121758132.

The previous prime is 27121758089. The next prime is 27121758173. The reversal of 27121758133 is 33185712172.

It is an a-pointer prime, because the next prime (27121758173) can be obtained adding 27121758133 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19072438609 + 8049319524 = 138103^2 + 89718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27121758133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27121758173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13560879066 + 13560879067.

It is an arithmetic number, because the mean of its divisors is an integer number (13560879067).

Almost surely, 2^27121758133 is an apocalyptic number.

It is an amenable number.

27121758133 is a deficient number, since it is larger than the sum of its proper divisors (1).

27121758133 is an equidigital number, since it uses as much as digits as its factorization.

27121758133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The spelling of 27121758133 in words is "twenty-seven billion, one hundred twenty-one million, seven hundred fifty-eight thousand, one hundred thirty-three".