27145328237 has 2 divisors, whose sum is σ = 27145328238. Its totient is φ = 27145328236.

The previous prime is 27145328233. The next prime is 27145328263. The reversal of 27145328237 is 73282354172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25063322596 + 2082005641 = 158314^2 + 45629^2 .

It is a cyclic number.

It is not a de Polignac number, because 27145328237 - 2² = 27145328233 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27145328233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13572664118 + 13572664119.

It is an arithmetic number, because the mean of its divisors is an integer number (13572664119).

Almost surely, 2^27145328237 is an apocalyptic number.

It is an amenable number.

27145328237 is a deficient number, since it is larger than the sum of its proper divisors (1).

27145328237 is an equidigital number, since it uses as much as digits as its factorization.

27145328237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 44.

The spelling of 27145328237 in words is "twenty-seven billion, one hundred forty-five million, three hundred twenty-eight thousand, two hundred thirty-seven".