127278885917741 has 2 divisors, whose sum is σ = 127278885917742. Its totient is φ = 127278885917740.

The previous prime is 127278885917713. The next prime is 127278885917749. The reversal of 127278885917741 is 147719588872721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108610351013641 + 18668534904100 = 10421629^2 + 4320710^2 .

It is a cyclic number.

It is not a de Polignac number, because 127278885917741 - 2²² = 127278881723437 is a prime.

It is a super-2 number, since 2×127278885917741² (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 (127278885917749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63639442958870 + 63639442958871.

It is an arithmetic number, because the mean of its divisors is an integer number (63639442958871).

Almost surely, 2^{127278885917741} is an apocalyptic number.

It is an amenable number.

127278885917741 is a deficient number, since it is larger than the sum of its proper divisors (1).

127278885917741 is an equidigital number, since it uses as much as digits as its factorization.

127278885917741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 885104640, while the sum is 77.

The spelling of 127278885917741 in words is "one hundred twenty-seven trillion, two hundred seventy-eight billion, eight hundred eighty-five million, nine hundred seventeen thousand, seven hundred forty-one".