8751177981121 has 3 divisors (see below), whose sum is σ = 8751180939361. Its totient is φ = 8751175022882.

The previous prime is 8751177981109. The next prime is 8751177981149. The reversal of 8751177981121 is 1211897711578.

The square root of 8751177981121 is 2958239.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 8751177981121 - 2⁵ = 8751177981089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8751177981151) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1479120 + ... + 4437358.

Almost surely, 2^{8751177981121} is an apocalyptic number.

8751177981121 is the 2958239-th square number.

8751177981121 is the 1479120-th centered octagonal number.

It is an amenable number.

8751177981121 is a deficient number, since it is larger than the sum of its proper divisors (2958240).

8751177981121 is an frugal number, since it uses more digits than its factorization.

8751177981121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916478 (or 2958239 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 58.

The spelling of 8751177981121 in words is "eight trillion, seven hundred fifty-one billion, one hundred seventy-seven million, nine hundred eighty-one thousand, one hundred twenty-one".