28752119177 has 4 divisors (see below), whose sum is σ = 28752465300. Its totient is φ = 28751773056.

The previous prime is 28752119141. The next prime is 28752119273. The reversal of 28752119177 is 77191125782.

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 can be written as a sum of positive squares in 2 ways, for example, as 19315162441 + 9436956736 = 138979^2 + 97144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28752119177 is a prime.

It is a super-2 number, since 2×28752119177² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28752119117) 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, 34613 + ... + 242285.

It is an arithmetic number, because the mean of its divisors is an integer number (7188116325).

It is a Poulet number, since it divides 2^28752119176-1.

Almost surely, 2^28752119177 is an apocalyptic number.

28752119177 is the 138449-th pentagonal number.

It is an amenable number.

28752119177 is a deficient number, since it is larger than the sum of its proper divisors (346123).

28752119177 is a wasteful number, since it uses less digits than its factorization.

28752119177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346122.

The product of its digits is 493920, while the sum is 50.

The spelling of 28752119177 in words is "twenty-eight billion, seven hundred fifty-two million, one hundred nineteen thousand, one hundred seventy-seven".