47107005721 has 4 divisors (see below), whose sum is σ = 47107593232. Its totient is φ = 47106418212.

The previous prime is 47107005667. The next prime is 47107005731. The reversal of 47107005721 is 12750070174.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12750070174 = 2 ⋅6375035087.

It is a cyclic number.

It is not a de Polignac number, because 47107005721 - 2¹³ = 47106997529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47107005731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150051 + ... + 341656.

It is an arithmetic number, because the mean of its divisors is an integer number (11776898308).

Almost surely, 2^47107005721 is an apocalyptic number.

It is an amenable number.

47107005721 is a deficient number, since it is larger than the sum of its proper divisors (587511).

47107005721 is an equidigital number, since it uses as much as digits as its factorization.

47107005721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587510.

The product of its (nonzero) digits is 13720, while the sum is 34.

Adding to 47107005721 its reverse (12750070174), we get a palindrome (59857075895).

The spelling of 47107005721 in words is "forty-seven billion, one hundred seven million, five thousand, seven hundred twenty-one".