127650702409 has 2 divisors, whose sum is σ = 127650702410. Its totient is φ = 127650702408.

The previous prime is 127650702401. The next prime is 127650702479. The reversal of 127650702409 is 904207056721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113057337600 + 14593364809 = 336240^2 + 120803^2 .

It is a cyclic number.

It is not a de Polignac number, because 127650702409 - 2³ = 127650702401 is a prime.

It is a super-2 number, since 2×127650702409² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127650702401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63825351204 + 63825351205.

It is an arithmetic number, because the mean of its divisors is an integer number (63825351205).

Almost surely, 2^127650702409 is an apocalyptic number.

It is an amenable number.

127650702409 is a deficient number, since it is larger than the sum of its proper divisors (1).

127650702409 is an equidigital number, since it uses as much as digits as its factorization.

127650702409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 127650702409 in words is "one hundred twenty-seven billion, six hundred fifty million, seven hundred two thousand, four hundred nine".