127640103578 has 32 divisors (see below), whose sum is σ = 218500223760. Its totient is φ = 55492093440.

The previous prime is 127640103571. The next prime is 127640103589. The reversal of 127640103578 is 875301046721.

It can be written as a sum of positive squares in 8 ways, for example, as 25909087369 + 101731016209 = 160963^2 + 318953^2 .

It is not an unprimeable number, because it can be changed into a prime (127640103571) 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 in 15 ways as a sum of consecutive naturals, for example, 2033525 + ... + 2095352.

Almost surely, 2^127640103578 is an apocalyptic number.

127640103578 is a deficient number, since it is larger than the sum of its proper divisors (90860120182).

127640103578 is a wasteful number, since it uses less digits than its factorization.

127640103578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128962.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 127640103578 in words is "one hundred twenty-seven billion, six hundred forty million, one hundred three thousand, five hundred seventy-eight".