127925709518 has 4 divisors (see below), whose sum is σ = 191888564280. Its totient is φ = 63962854758.

The previous prime is 127925709517. The next prime is 127925709589. The reversal of 127925709518 is 815907529721.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127925709517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31981427378 + ... + 31981427381.

It is an arithmetic number, because the mean of its divisors is an integer number (47972141070).

Almost surely, 2^127925709518 is an apocalyptic number.

127925709518 is a deficient number, since it is larger than the sum of its proper divisors (63962854762).

127925709518 is an equidigital number, since it uses as much as digits as its factorization.

127925709518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63962854761.

The product of its (nonzero) digits is 3175200, while the sum is 56.

The spelling of 127925709518 in words is "one hundred twenty-seven billion, nine hundred twenty-five million, seven hundred nine thousand, five hundred eighteen".