47879468809 has 4 divisors (see below), whose sum is σ = 47885917716. Its totient is φ = 47873019904.

The previous prime is 47879468807. The next prime is 47879468827. The reversal of 47879468809 is 90886497874.

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 878529600 + 47000939209 = 29640^2 + 216797^2 .

It is a cyclic number.

It is not a de Polignac number, because 47879468809 - 2¹ = 47879468807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47879468801) 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, 3213304 + ... + 3228169.

It is an arithmetic number, because the mean of its divisors is an integer number (11971479429).

Almost surely, 2^47879468809 is an apocalyptic number.

It is an amenable number.

47879468809 is a deficient number, since it is larger than the sum of its proper divisors (6448907).

47879468809 is an equidigital number, since it uses as much as digits as its factorization.

47879468809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6448906.

The product of its (nonzero) digits is 195084288, while the sum is 70.

The spelling of 47879468809 in words is "forty-seven billion, eight hundred seventy-nine million, four hundred sixty-eight thousand, eight hundred nine".