127638875264 has 32 divisors (see below), whose sum is σ = 254313287040. Its totient is φ = 63811226880.

The previous prime is 127638875257. The next prime is 127638875267. The reversal of 127638875264 is 462578836721.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (127638875267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003817 + ... + 1123799.

It is an arithmetic number, because the mean of its divisors is an integer number (7947290220).

Almost surely, 2^127638875264 is an apocalyptic number.

It is an amenable number.

127638875264 is a deficient number, since it is larger than the sum of its proper divisors (126674411776).

127638875264 is an equidigital number, since it uses as much as digits as its factorization.

127638875264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128308 (or 128296 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 59.

The spelling of 127638875264 in words is "one hundred twenty-seven billion, six hundred thirty-eight million, eight hundred seventy-five thousand, two hundred sixty-four".