127875949519 has 4 divisors (see below), whose sum is σ = 129117463696. Its totient is φ = 126634435344.

The previous prime is 127875949459. The next prime is 127875949589. The reversal of 127875949519 is 915949578721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 915949578721 = 23 ⋅39823894727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127875949519 is a prime.

It is a super-2 number, since 2×127875949519² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127875949589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620756934 + ... + 620757139.

It is an arithmetic number, because the mean of its divisors is an integer number (32279365924).

Almost surely, 2^127875949519 is an apocalyptic number.

127875949519 is a deficient number, since it is larger than the sum of its proper divisors (1241514177).

127875949519 is a wasteful number, since it uses less digits than its factorization.

127875949519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241514176.

The product of its digits is 57153600, while the sum is 67.

The spelling of 127875949519 in words is "one hundred twenty-seven billion, eight hundred seventy-five million, nine hundred forty-nine thousand, five hundred nineteen".