47170473521 has 2 divisors, whose sum is σ = 47170473522. Its totient is φ = 47170473520.

The previous prime is 47170473403. The next prime is 47170473523. The reversal of 47170473521 is 12537407174.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44007648400 + 3162825121 = 209780^2 + 56239^2 .

It is a cyclic number.

It is not a de Polignac number, because 47170473521 - 2¹⁴ = 47170457137 is a prime.

Together with 47170473523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47170473523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23585236760 + 23585236761.

It is an arithmetic number, because the mean of its divisors is an integer number (23585236761).

Almost surely, 2^47170473521 is an apocalyptic number.

It is an amenable number.

47170473521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47170473521 is an equidigital number, since it uses as much as digits as its factorization.

47170473521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 47170473521 in words is "forty-seven billion, one hundred seventy million, four hundred seventy-three thousand, five hundred twenty-one".