47446420649 has 2 divisors, whose sum is σ = 47446420650. Its totient is φ = 47446420648.

The previous prime is 47446420613. The next prime is 47446420727. The reversal of 47446420649 is 94602464474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28075348249 + 19371072400 = 167557^2 + 139180^2 .

It is a cyclic number.

It is not a de Polignac number, because 47446420649 - 2⁸ = 47446420393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47446420597 and 47446420606.

It is not a weakly prime, because it can be changed into another prime (47446420349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23723210324 + 23723210325.

It is an arithmetic number, because the mean of its divisors is an integer number (23723210325).

Almost surely, 2^47446420649 is an apocalyptic number.

It is an amenable number.

47446420649 is a deficient number, since it is larger than the sum of its proper divisors (1).

47446420649 is an equidigital number, since it uses as much as digits as its factorization.

47446420649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 50.

The spelling of 47446420649 in words is "forty-seven billion, four hundred forty-six million, four hundred twenty thousand, six hundred forty-nine".