47448068021 has 2 divisors, whose sum is σ = 47448068022. Its totient is φ = 47448068020.

The previous prime is 47448067949. The next prime is 47448068023. The reversal of 47448068021 is 12086084474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46327827121 + 1120240900 = 215239^2 + 33470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47448068021 is a prime.

Together with 47448068023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47448068023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23724034010 + 23724034011.

It is an arithmetic number, because the mean of its divisors is an integer number (23724034011).

Almost surely, 2^47448068021 is an apocalyptic number.

It is an amenable number.

47448068021 is a deficient number, since it is larger than the sum of its proper divisors (1).

47448068021 is an equidigital number, since it uses as much as digits as its factorization.

47448068021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344064, while the sum is 44.

The spelling of 47448068021 in words is "forty-seven billion, four hundred forty-eight million, sixty-eight thousand, twenty-one".