127009387903973 has 2 divisors, whose sum is σ = 127009387903974. Its totient is φ = 127009387903972.

The previous prime is 127009387903967. The next prime is 127009387903999. The reversal of 127009387903973 is 379309783900721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65051048168929 + 61958339735044 = 8065423^2 + 7871362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127009387903973 is a prime.

It is a super-2 number, since 2×127009387903973² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127009387933973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63504693951986 + 63504693951987.

It is an arithmetic number, because the mean of its divisors is an integer number (63504693951987).

Almost surely, 2^{127009387903973} is an apocalyptic number.

It is an amenable number.

127009387903973 is a deficient number, since it is larger than the sum of its proper divisors (1).

127009387903973 is an equidigital number, since it uses as much as digits as its factorization.

127009387903973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108020304, while the sum is 68.

The spelling of 127009387903973 in words is "one hundred twenty-seven trillion, nine billion, three hundred eighty-seven million, nine hundred three thousand, nine hundred seventy-three".