28778058411 has 4 divisors (see below), whose sum is σ = 38370744552. Its totient is φ = 19185372272.

The previous prime is 28778058403. The next prime is 28778058437. The reversal of 28778058411 is 11485087782.

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 28778058411 - 2³ = 28778058403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28778058451) 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, 4796343066 + ... + 4796343071.

It is an arithmetic number, because the mean of its divisors is an integer number (9592686138).

Almost surely, 2^28778058411 is an apocalyptic number.

28778058411 is a deficient number, since it is larger than the sum of its proper divisors (9592686141).

28778058411 is an equidigital number, since it uses as much as digits as its factorization.

28778058411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9592686140.

The product of its (nonzero) digits is 1003520, while the sum is 51.

The spelling of 28778058411 in words is "twenty-eight billion, seven hundred seventy-eight million, fifty-eight thousand, four hundred eleven".