127923557696593 has 2 divisors, whose sum is σ = 127923557696594. Its totient is φ = 127923557696592.

The previous prime is 127923557696587. The next prime is 127923557696629. The reversal of 127923557696593 is 395696755329721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97484580471184 + 30438977225409 = 9873428^2 + 5517153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127923557696593 is a prime.

It is a super-2 number, since 2×127923557696593² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127923557696533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63961778848296 + 63961778848297.

It is an arithmetic number, because the mean of its divisors is an integer number (63961778848297).

Almost surely, 2^{127923557696593} is an apocalyptic number.

It is an amenable number.

127923557696593 is a deficient number, since it is larger than the sum of its proper divisors (1).

127923557696593 is an equidigital number, since it uses as much as digits as its factorization.

127923557696593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5786802000, while the sum is 79.

The spelling of 127923557696593 in words is "one hundred twenty-seven trillion, nine hundred twenty-three billion, five hundred fifty-seven million, six hundred ninety-six thousand, five hundred ninety-three".