47227048921909 has 4 divisors (see below), whose sum is σ = 48118125316716. Its totient is φ = 46335972527104.

The previous prime is 47227048921901. The next prime is 47227048921937. The reversal of 47227048921909 is 90912984072274.

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 12724758883684 + 34502290038225 = 3567178^2 + 5873865^2 .

It is a cyclic number.

It is not a de Polignac number, because 47227048921909 - 2³ = 47227048921901 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 (47227048921901) 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, 445538197324 + ... + 445538197429.

It is an arithmetic number, because the mean of its divisors is an integer number (12029531329179).

Almost surely, 2^{47227048921909} is an apocalyptic number.

It is an amenable number.

47227048921909 is a deficient number, since it is larger than the sum of its proper divisors (891076394807).

47227048921909 is an equidigital number, since it uses as much as digits as its factorization.

47227048921909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891076394806.

The product of its (nonzero) digits is 36578304, while the sum is 64.

The spelling of 47227048921909 in words is "forty-seven trillion, two hundred twenty-seven billion, forty-eight million, nine hundred twenty-one thousand, nine hundred nine".