126875063681 has 2 divisors, whose sum is σ = 126875063682. Its totient is φ = 126875063680.

The previous prime is 126875063677. The next prime is 126875063729. The reversal of 126875063681 is 186360578621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124824423025 + 2050640656 = 353305^2 + 45284^2 .

It is a cyclic number.

It is not a de Polignac number, because 126875063681 - 2² = 126875063677 is a prime.

It is a super-2 number, since 2×126875063681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126875063881) 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, 63437531840 + 63437531841.

It is an arithmetic number, because the mean of its divisors is an integer number (63437531841).

Almost surely, 2^126875063681 is an apocalyptic number.

It is an amenable number.

126875063681 is a deficient number, since it is larger than the sum of its proper divisors (1).

126875063681 is an equidigital number, since it uses as much as digits as its factorization.

126875063681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 126875063681 in words is "one hundred twenty-six billion, eight hundred seventy-five million, sixty-three thousand, six hundred eighty-one".