127187057773 has 2 divisors, whose sum is σ = 127187057774. Its totient is φ = 127187057772.

The previous prime is 127187057689. The next prime is 127187057791. The reversal of 127187057773 is 377750781721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65557505764 + 61629552009 = 256042^2 + 248253^2 .

It is a cyclic number.

It is not a de Polignac number, because 127187057773 - 2²¹ = 127184960621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127187057573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63593528886 + 63593528887.

It is an arithmetic number, because the mean of its divisors is an integer number (63593528887).

Almost surely, 2^127187057773 is an apocalyptic number.

It is an amenable number.

127187057773 is a deficient number, since it is larger than the sum of its proper divisors (1).

127187057773 is an equidigital number, since it uses as much as digits as its factorization.

127187057773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4033680, while the sum is 55.

The spelling of 127187057773 in words is "one hundred twenty-seven billion, one hundred eighty-seven million, fifty-seven thousand, seven hundred seventy-three".