127452388477 has 2 divisors, whose sum is σ = 127452388478. Its totient is φ = 127452388476.

The previous prime is 127452388429. The next prime is 127452388489. The reversal of 127452388477 is 774883254721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124491831556 + 2960556921 = 352834^2 + 54411^2 .

It is an emirp because it is prime and its reverse (774883254721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127452388477 - 2¹¹ = 127452386429 is a prime.

It is a super-2 number, since 2×127452388477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127452385477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63726194238 + 63726194239.

It is an arithmetic number, because the mean of its divisors is an integer number (63726194239).

Almost surely, 2^127452388477 is an apocalyptic number.

It is an amenable number.

127452388477 is a deficient number, since it is larger than the sum of its proper divisors (1).

127452388477 is an equidigital number, since it uses as much as digits as its factorization.

127452388477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21073920, while the sum is 58.

The spelling of 127452388477 in words is "one hundred twenty-seven billion, four hundred fifty-two million, three hundred eighty-eight thousand, four hundred seventy-seven".