27740501237 has 2 divisors, whose sum is σ = 27740501238. Its totient is φ = 27740501236.

The previous prime is 27740501209. The next prime is 27740501263. The reversal of 27740501237 is 73210504772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22038590116 + 5701911121 = 148454^2 + 75511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27740501237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27740501237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27740501207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13870250618 + 13870250619.

It is an arithmetic number, because the mean of its divisors is an integer number (13870250619).

Almost surely, 2^27740501237 is an apocalyptic number.

It is an amenable number.

27740501237 is a deficient number, since it is larger than the sum of its proper divisors (1).

27740501237 is an equidigital number, since it uses as much as digits as its factorization.

27740501237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 38.

The spelling of 27740501237 in words is "twenty-seven billion, seven hundred forty million, five hundred one thousand, two hundred thirty-seven".