47145122149 has 2 divisors, whose sum is σ = 47145122150. Its totient is φ = 47145122148.

The previous prime is 47145122117. The next prime is 47145122159. The reversal of 47145122149 is 94122154174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27616457124 + 19528665025 = 166182^2 + 139745^2 .

It is a cyclic number.

It is not a de Polignac number, because 47145122149 - 2⁵ = 47145122117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47145122159) 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, 23572561074 + 23572561075.

It is an arithmetic number, because the mean of its divisors is an integer number (23572561075).

Almost surely, 2^47145122149 is an apocalyptic number.

It is an amenable number.

47145122149 is a deficient number, since it is larger than the sum of its proper divisors (1).

47145122149 is an equidigital number, since it uses as much as digits as its factorization.

47145122149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The spelling of 47145122149 in words is "forty-seven billion, one hundred forty-five million, one hundred twenty-two thousand, one hundred forty-nine".