47129651909 has 2 divisors, whose sum is σ = 47129651910. Its totient is φ = 47129651908.

The previous prime is 47129651903. The next prime is 47129651911. The reversal of 47129651909 is 90915692174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27059263009 + 20070388900 = 164497^2 + 141670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47129651909 is a prime.

Together with 47129651911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47129651903) 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, 23564825954 + 23564825955.

It is an arithmetic number, because the mean of its divisors is an integer number (23564825955).

Almost surely, 2^47129651909 is an apocalyptic number.

It is an amenable number.

47129651909 is a deficient number, since it is larger than the sum of its proper divisors (1).

47129651909 is an equidigital number, since it uses as much as digits as its factorization.

47129651909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 47129651909 in words is "forty-seven billion, one hundred twenty-nine million, six hundred fifty-one thousand, nine hundred nine".