47978641539841 has 4 divisors (see below), whose sum is σ = 48062962527300. Its totient is φ = 47894320552384.

The previous prime is 47978641539811. The next prime is 47978641539923. The reversal of 47978641539841 is 14893514687974.

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 8374778754241 + 39603862785600 = 2893921^2 + 6293160^2 .

It is a cyclic number.

It is not a de Polignac number, because 47978641539841 - 2²³ = 47978633151233 is a prime.

It is a super-3 number, since 3×47978641539841³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47978641539811) 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, 42160492876 + ... + 42160494013.

It is an arithmetic number, because the mean of its divisors is an integer number (12015740631825).

Almost surely, 2^{47978641539841} is an apocalyptic number.

It is an amenable number.

47978641539841 is a deficient number, since it is larger than the sum of its proper divisors (84320987459).

47978641539841 is an equidigital number, since it uses as much as digits as its factorization.

47978641539841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84320987458.

The product of its digits is 1463132160, while the sum is 76.

The spelling of 47978641539841 in words is "forty-seven trillion, nine hundred seventy-eight billion, six hundred forty-one million, five hundred thirty-nine thousand, eight hundred forty-one".