28747456879 has 2 divisors, whose sum is σ = 28747456880. Its totient is φ = 28747456878.

The previous prime is 28747456873. The next prime is 28747456921. The reversal of 28747456879 is 97865474782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28747456879 - 2¹¹ = 28747454831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28747456873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14373728439 + 14373728440.

It is an arithmetic number, because the mean of its divisors is an integer number (14373728440).

Almost surely, 2^28747456879 is an apocalyptic number.

28747456879 is a deficient number, since it is larger than the sum of its proper divisors (1).

28747456879 is an equidigital number, since it uses as much as digits as its factorization.

28747456879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189665280, while the sum is 67.

The spelling of 28747456879 in words is "twenty-eight billion, seven hundred forty-seven million, four hundred fifty-six thousand, eight hundred seventy-nine".