28677548284751 has 4 divisors (see below), whose sum is σ = 28677820053192. Its totient is φ = 28677276516312.

The previous prime is 28677548284739. The next prime is 28677548284783. The reversal of 28677548284751 is 15748284577682.

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 28677548284751 - 2³⁰ = 28676474542927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28677541284751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135725876 + ... + 135937001.

It is an arithmetic number, because the mean of its divisors is an integer number (7169455013298).

Almost surely, 2^{28677548284751} is an apocalyptic number.

28677548284751 is a deficient number, since it is larger than the sum of its proper divisors (271768441).

28677548284751 is a wasteful number, since it uses less digits than its factorization.

28677548284751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271768440.

The product of its digits is 1685913600, while the sum is 74.

The spelling of 28677548284751 in words is "twenty-eight trillion, six hundred seventy-seven billion, five hundred forty-eight million, two hundred eighty-four thousand, seven hundred fifty-one".