1000128449277 has 24 divisors (see below), whose sum is σ = 1465229113920. Its totient is φ = 657248242560.

The previous prime is 1000128449249. The next prime is 1000128449279. The reversal of 1000128449277 is 7729448210001.

1000128449277 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 12 + 84 + 492 + 77 = 666.

It is not a de Polignac number, because 1000128449277 - 2²⁴ = 1000111672061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000128449279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3663253 + ... + 3926789.

It is an arithmetic number, because the mean of its divisors is an integer number (61051213080).

Almost surely, 2^{1000128449277} is an apocalyptic number.

It is an amenable number.

1000128449277 is a deficient number, since it is larger than the sum of its proper divisors (465100664643).

1000128449277 is a wasteful number, since it uses less digits than its factorization.

1000128449277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269553 (or 269550 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 1000128449277 in words is "one trillion, one hundred twenty-eight million, four hundred forty-nine thousand, two hundred seventy-seven".