126375443977 has 2 divisors, whose sum is σ = 126375443978. Its totient is φ = 126375443976.

The previous prime is 126375443947. The next prime is 126375444163. The reversal of 126375443977 is 779344573621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69546128656 + 56829315321 = 263716^2 + 238389^2 .

It is an emirp because it is prime and its reverse (779344573621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126375443977 is a prime.

It is not a weakly prime, because it can be changed into another prime (126375443917) 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, 63187721988 + 63187721989.

It is an arithmetic number, because the mean of its divisors is an integer number (63187721989).

Almost surely, 2^126375443977 is an apocalyptic number.

It is an amenable number.

126375443977 is a deficient number, since it is larger than the sum of its proper divisors (1).

126375443977 is an equidigital number, since it uses as much as digits as its factorization.

126375443977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 58.

The spelling of 126375443977 in words is "one hundred twenty-six billion, three hundred seventy-five million, four hundred forty-three thousand, nine hundred seventy-seven".