127153773772549 has 2 divisors, whose sum is σ = 127153773772550. Its totient is φ = 127153773772548.

The previous prime is 127153773772499. The next prime is 127153773772601. The reversal of 127153773772549 is 945277377351721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127150318449025 + 3455323524 = 11276095^2 + 58782^2 .

It is an emirp because it is prime and its reverse (945277377351721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127153773772549 - 2³⁵ = 127119414034181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127153773770549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63576886886274 + 63576886886275.

It is an arithmetic number, because the mean of its divisors is an integer number (63576886886275).

Almost surely, 2^{127153773772549} is an apocalyptic number.

It is an amenable number.

127153773772549 is a deficient number, since it is larger than the sum of its proper divisors (1).

127153773772549 is an equidigital number, since it uses as much as digits as its factorization.

127153773772549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544546800, while the sum is 70.

The spelling of 127153773772549 in words is "one hundred twenty-seven trillion, one hundred fifty-three billion, seven hundred seventy-three million, seven hundred seventy-two thousand, five hundred forty-nine".