28758056060819 has 4 divisors (see below), whose sum is σ = 28801562954160. Its totient is φ = 28714549167480.

The previous prime is 28758056060791. The next prime is 28758056060821. The reversal of 28758056060819 is 91806065085782.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28758056060819 is a prime.

It is a super-2 number, since 2×28758056060819² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28758056060519) 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, 21753445679 + ... + 21753447000.

It is an arithmetic number, because the mean of its divisors is an integer number (7200390738540).

Almost surely, 2^{28758056060819} is an apocalyptic number.

28758056060819 is a deficient number, since it is larger than the sum of its proper divisors (43506893341).

28758056060819 is an equidigital number, since it uses as much as digits as its factorization.

28758056060819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43506893340.

The product of its (nonzero) digits is 58060800, while the sum is 65.

The spelling of 28758056060819 in words is "twenty-eight trillion, seven hundred fifty-eight billion, fifty-six million, sixty thousand, eight hundred nineteen".