47779028593 has 4 divisors (see below), whose sum is σ = 48433535908. Its totient is φ = 47124521280.

The previous prime is 47779028551. The next prime is 47779028599. The reversal of 47779028593 is 39582097774.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16355084769 + 31423943824 = 127887^2 + 177268^2 .

It is a cyclic number.

It is not a de Polignac number, because 47779028593 - 2²⁹ = 47242157681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47779028599) 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, 327253548 + ... + 327253693.

It is an arithmetic number, because the mean of its divisors is an integer number (12108383977).

Almost surely, 2^47779028593 is an apocalyptic number.

It is an amenable number.

47779028593 is a deficient number, since it is larger than the sum of its proper divisors (654507315).

47779028593 is an equidigital number, since it uses as much as digits as its factorization.

47779028593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654507314.

The product of its (nonzero) digits is 26671680, while the sum is 61.

The spelling of 47779028593 in words is "forty-seven billion, seven hundred seventy-nine million, twenty-eight thousand, five hundred ninety-three".