27800241437 has 2 divisors, whose sum is σ = 27800241438. Its totient is φ = 27800241436.

The previous prime is 27800241367. The next prime is 27800241451. The reversal of 27800241437 is 73414200872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21126331801 + 6673909636 = 145349^2 + 81694^2 .

It is a cyclic number.

It is not a de Polignac number, because 27800241437 - 2⁸ = 27800241181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27800241437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27800241137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900120718 + 13900120719.

It is an arithmetic number, because the mean of its divisors is an integer number (13900120719).

Almost surely, 2^27800241437 is an apocalyptic number.

It is an amenable number.

27800241437 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800241437 is an equidigital number, since it uses as much as digits as its factorization.

27800241437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 27800241437 in words is "twenty-seven billion, eight hundred million, two hundred forty-one thousand, four hundred thirty-seven".