127121527877 has 2 divisors, whose sum is σ = 127121527878. Its totient is φ = 127121527876.

The previous prime is 127121527831. The next prime is 127121527921. The reversal of 127121527877 is 778725121721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120548534401 + 6572993476 = 347201^2 + 81074^2 .

It is a cyclic number.

It is not a de Polignac number, because 127121527877 - 2¹⁶ = 127121462341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127121527817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63560763938 + 63560763939.

It is an arithmetic number, because the mean of its divisors is an integer number (63560763939).

Almost surely, 2^127121527877 is an apocalyptic number.

It is an amenable number.

127121527877 is a deficient number, since it is larger than the sum of its proper divisors (1).

127121527877 is an equidigital number, since it uses as much as digits as its factorization.

127121527877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768320, while the sum is 50.

The spelling of 127121527877 in words is "one hundred twenty-seven billion, one hundred twenty-one million, five hundred twenty-seven thousand, eight hundred seventy-seven".