1128173531272 has 32 divisors (see below), whose sum is σ = 2193026179680. Its totient is φ = 543698074240.

The previous prime is 1128173531237. The next prime is 1128173531311. The reversal of 1128173531272 is 2721353718211.

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, 20692978 + ... + 20747425.

It is an arithmetic number, because the mean of its divisors is an integer number (68532068115).

Almost surely, 2^{1128173531272} is an apocalyptic number.

It is an amenable number.

1128173531272 is a deficient number, since it is larger than the sum of its proper divisors (1064852648408).

1128173531272 is a wasteful number, since it uses less digits than its factorization.

1128173531272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41440533 (or 41440529 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The spelling of 1128173531272 in words is "one trillion, one hundred twenty-eight billion, one hundred seventy-three million, five hundred thirty-one thousand, two hundred seventy-two".