47821992073 has 4 divisors (see below), whose sum is σ = 47823113988. Its totient is φ = 47820870160.

The previous prime is 47821992047. The next prime is 47821992079. The reversal of 47821992073 is 37029912874.

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 30606452809 + 17215539264 = 174947^2 + 131208^2 .

It is a cyclic number.

It is not a de Polignac number, because 47821992073 - 2⁹ = 47821991561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47821992073.

It is not an unprimeable number, because it can be changed into a prime (47821992079) 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, 494386 + ... + 583147.

It is an arithmetic number, because the mean of its divisors is an integer number (11955778497).

Almost surely, 2^47821992073 is an apocalyptic number.

It is an amenable number.

47821992073 is a deficient number, since it is larger than the sum of its proper divisors (1121915).

47821992073 is a wasteful number, since it uses less digits than its factorization.

47821992073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121914.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 47821992073 in words is "forty-seven billion, eight hundred twenty-one million, nine hundred ninety-two thousand, seventy-three".