127542775269 has 48 divisors (see below), whose sum is σ = 215605478592. Its totient is φ = 66464681472.

The previous prime is 127542775249. The next prime is 127542775271. The reversal of 127542775269 is 962577245721.

It is not a de Polignac number, because 127542775269 - 2¹⁶ = 127542709733 is a prime.

It is a super-2 number, since 2×127542775269² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127542775249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 243444 + ... + 560669.

It is an arithmetic number, because the mean of its divisors is an integer number (4491780804).

Almost surely, 2^127542775269 is an apocalyptic number.

It is an amenable number.

127542775269 is a deficient number, since it is larger than the sum of its proper divisors (88062703323).

127542775269 is a wasteful number, since it uses less digits than its factorization.

127542775269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804226 (or 804219 counting only the distinct ones).

The product of its digits is 14817600, while the sum is 57.

The spelling of 127542775269 in words is "one hundred twenty-seven billion, five hundred forty-two million, seven hundred seventy-five thousand, two hundred sixty-nine".