137827557809 has 2 divisors, whose sum is σ = 137827557810. Its totient is φ = 137827557808.

The previous prime is 137827557793. The next prime is 137827557853. The reversal of 137827557809 is 908755728731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133751118400 + 4076439409 = 365720^2 + 63847^2 .

It is a cyclic number.

It is not a de Polignac number, because 137827557809 - 2⁴ = 137827557793 is a prime.

It is not a weakly prime, because it can be changed into another prime (137827557859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68913778904 + 68913778905.

It is an arithmetic number, because the mean of its divisors is an integer number (68913778905).

Almost surely, 2^137827557809 is an apocalyptic number.

It is an amenable number.

137827557809 is a deficient number, since it is larger than the sum of its proper divisors (1).

137827557809 is an equidigital number, since it uses as much as digits as its factorization.

137827557809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29635200, while the sum is 62.

The spelling of 137827557809 in words is "one hundred thirty-seven billion, eight hundred twenty-seven million, five hundred fifty-seven thousand, eight hundred nine".