47353531081 has 2 divisors, whose sum is σ = 47353531082. Its totient is φ = 47353531080.

The previous prime is 47353531063. The next prime is 47353531097. The reversal of 47353531081 is 18013535374.

It is a happy number.

47353531081 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., 47269717056 + 83814025 = 217416^2 + 9155^2 .

It is a cyclic number.

It is not a de Polignac number, because 47353531081 - 2²⁷ = 47219313353 is a prime.

It is a super-2 number, since 2×47353531081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47353531021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23676765540 + 23676765541.

It is an arithmetic number, because the mean of its divisors is an integer number (23676765541).

Almost surely, 2^47353531081 is an apocalyptic number.

It is an amenable number.

47353531081 is a deficient number, since it is larger than the sum of its proper divisors (1).

47353531081 is an equidigital number, since it uses as much as digits as its factorization.

47353531081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 47353531081 in words is "forty-seven billion, three hundred fifty-three million, five hundred thirty-one thousand, eighty-one".