28755454751 has 4 divisors (see below), whose sum is σ = 29242835400. Its totient is φ = 28268074104.

The previous prime is 28755454711. The next prime is 28755454757. The reversal of 28755454751 is 15745455782.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28755454751 - 2¹⁸ = 28755192607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28755454693 and 28755454702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28755454757) 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, 243690236 + ... + 243690353.

It is an arithmetic number, because the mean of its divisors is an integer number (7310708850).

Almost surely, 2^28755454751 is an apocalyptic number.

28755454751 is a deficient number, since it is larger than the sum of its proper divisors (487380649).

28755454751 is an equidigital number, since it uses as much as digits as its factorization.

28755454751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487380648.

The product of its digits is 7840000, while the sum is 53.

The spelling of 28755454751 in words is "twenty-eight billion, seven hundred fifty-five million, four hundred fifty-four thousand, seven hundred fifty-one".