47821731189 has 4 divisors (see below), whose sum is σ = 63762308256. Its totient is φ = 31881154124.

The previous prime is 47821731149. The next prime is 47821731197. The reversal of 47821731189 is 98113712874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47821731189 - 2¹¹ = 47821729141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47821731149) 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, 7970288529 + ... + 7970288534.

It is an arithmetic number, because the mean of its divisors is an integer number (15940577064).

Almost surely, 2^47821731189 is an apocalyptic number.

It is an amenable number.

47821731189 is a deficient number, since it is larger than the sum of its proper divisors (15940577067).

47821731189 is a wasteful number, since it uses less digits than its factorization.

47821731189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15940577066.

The product of its digits is 677376, while the sum is 51.

The spelling of 47821731189 in words is "forty-seven billion, eight hundred twenty-one million, seven hundred thirty-one thousand, one hundred eighty-nine".