127640642677448 has 32 divisors (see below), whose sum is σ = 241396925468160. Its totient is φ = 63270504241920.

The previous prime is 127640642677423. The next prime is 127640642677453. The reversal of 127640642677448 is 844776246046721.

It is a happy number.

It is a super-2 number, since 2×127640642677448² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148008740 + ... + 148868627.

It is an arithmetic number, because the mean of its divisors is an integer number (7543653920880).

Almost surely, 2^{127640642677448} is an apocalyptic number.

It is an amenable number.

127640642677448 is a deficient number, since it is larger than the sum of its proper divisors (113756282790712).

127640642677448 is a wasteful number, since it uses less digits than its factorization.

127640642677448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296877837 (or 296877833 counting only the distinct ones).

The product of its (nonzero) digits is 606928896, while the sum is 68.

The spelling of 127640642677448 in words is "one hundred twenty-seven trillion, six hundred forty billion, six hundred forty-two million, six hundred seventy-seven thousand, four hundred forty-eight".