127200037271137 has 4 divisors (see below), whose sum is σ = 129600037974420. Its totient is φ = 124800036567856.

The previous prime is 127200037271123. The next prime is 127200037271141. The reversal of 127200037271137 is 731172730002721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110880247140961 + 16319790130176 = 10529969^2 + 4039776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127200037271137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127200037271093 and 127200037271102.

It is not an unprimeable number, because it can be changed into a prime (127200037371137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200000351562 + ... + 1200000351667.

It is an arithmetic number, because the mean of its divisors is an integer number (32400009493605).

Almost surely, 2^{127200037271137} is an apocalyptic number.

It is an amenable number.

127200037271137 is a deficient number, since it is larger than the sum of its proper divisors (2400000703283).

127200037271137 is an equidigital number, since it uses as much as digits as its factorization.

127200037271137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400000703282.

The product of its (nonzero) digits is 172872, while the sum is 43.

Adding to 127200037271137 its reverse (731172730002721), we get a palindrome (858372767273858).

The spelling of 127200037271137 in words is "one hundred twenty-seven trillion, two hundred billion, thirty-seven million, two hundred seventy-one thousand, one hundred thirty-seven".