47913521189 has 4 divisors (see below), whose sum is σ = 47916904620. Its totient is φ = 47910137760.

The previous prime is 47913521171. The next prime is 47913521209. The reversal of 47913521189 is 98112531974.

47913521189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98112531974 = 2 ⋅49056265987.

It can be written as a sum of positive squares in 2 ways, for example, as 27758892100 + 20154629089 = 166610^2 + 141967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47913521189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47913521389) 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, 1670384 + ... + 1698825.

It is an arithmetic number, because the mean of its divisors is an integer number (11979226155).

Almost surely, 2^47913521189 is an apocalyptic number.

It is an amenable number.

47913521189 is a deficient number, since it is larger than the sum of its proper divisors (3383431).

47913521189 is a wasteful number, since it uses less digits than its factorization.

47913521189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383430.

The product of its digits is 544320, while the sum is 50.

The spelling of 47913521189 in words is "forty-seven billion, nine hundred thirteen million, five hundred twenty-one thousand, one hundred eighty-nine".