47211236013649 has 2 divisors, whose sum is σ = 47211236013650. Its totient is φ = 47211236013648.

The previous prime is 47211236013611. The next prime is 47211236013661. The reversal of 47211236013649 is 94631063211274.

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., 47169698720400 + 41537293249 = 6868020^2 + 203807^2 .

It is a cyclic number.

It is not a de Polignac number, because 47211236013649 - 2⁷ = 47211236013521 is a prime.

It is not a weakly prime, because it can be changed into another prime (47211236010649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23605618006824 + 23605618006825.

It is an arithmetic number, because the mean of its divisors is an integer number (23605618006825).

Almost surely, 2^{47211236013649} is an apocalyptic number.

It is an amenable number.

47211236013649 is a deficient number, since it is larger than the sum of its proper divisors (1).

47211236013649 is an equidigital number, since it uses as much as digits as its factorization.

47211236013649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 47211236013649 in words is "forty-seven trillion, two hundred eleven billion, two hundred thirty-six million, thirteen thousand, six hundred forty-nine".