47501585129 has 2 divisors, whose sum is σ = 47501585130. Its totient is φ = 47501585128.

The previous prime is 47501585101. The next prime is 47501585149. The reversal of 47501585129 is 92158510574.

It is a happy number.

47501585129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47241891904 + 259693225 = 217352^2 + 16115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47501585129 is a prime.

It is not a weakly prime, because it can be changed into another prime (47501585149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23750792564 + 23750792565.

It is an arithmetic number, because the mean of its divisors is an integer number (23750792565).

Almost surely, 2^47501585129 is an apocalyptic number.

It is an amenable number.

47501585129 is a deficient number, since it is larger than the sum of its proper divisors (1).

47501585129 is an equidigital number, since it uses as much as digits as its factorization.

47501585129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 47.

The spelling of 47501585129 in words is "forty-seven billion, five hundred one million, five hundred eighty-five thousand, one hundred twenty-nine".