47978641539839 has 8 divisors (see below), whose sum is σ = 48105510153360. Its totient is φ = 47851774379136.

The previous prime is 47978641539811. The next prime is 47978641539923. The reversal of 47978641539839 is 93893514687974.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47978641539839 - 2²⁰ = 47978640491263 is a prime.

It is a super-3 number, since 3×47978641539839³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47978641559839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110068829 + ... + 110503865.

It is an arithmetic number, because the mean of its divisors is an integer number (6013188769170).

Almost surely, 2^{47978641539839} is an apocalyptic number.

47978641539839 is a deficient number, since it is larger than the sum of its proper divisors (126868613521).

47978641539839 is a wasteful number, since it uses less digits than its factorization.

47978641539839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726409.

The product of its digits is 9876142080, while the sum is 83.

The spelling of 47978641539839 in words is "forty-seven trillion, nine hundred seventy-eight billion, six hundred forty-one million, five hundred thirty-nine thousand, eight hundred thirty-nine".