47146138609 has 2 divisors, whose sum is σ = 47146138610. Its totient is φ = 47146138608.

The previous prime is 47146138517. The next prime is 47146138649. The reversal of 47146138609 is 90683164174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42607152225 + 4538986384 = 206415^2 + 67372^2 .

It is a cyclic number.

It is not a de Polignac number, because 47146138609 - 2¹¹ = 47146136561 is a prime.

It is not a weakly prime, because it can be changed into another prime (47146138649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23573069304 + 23573069305.

It is an arithmetic number, because the mean of its divisors is an integer number (23573069305).

Almost surely, 2^47146138609 is an apocalyptic number.

It is an amenable number.

47146138609 is a deficient number, since it is larger than the sum of its proper divisors (1).

47146138609 is an equidigital number, since it uses as much as digits as its factorization.

47146138609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 47146138609 in words is "forty-seven billion, one hundred forty-six million, one hundred thirty-eight thousand, six hundred nine".