47115022447 has 2 divisors, whose sum is σ = 47115022448. Its totient is φ = 47115022446.

The previous prime is 47115022441. The next prime is 47115022481. The reversal of 47115022447 is 74422051174.

47115022447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47115022447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47115022441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23557511223 + 23557511224.

It is an arithmetic number, because the mean of its divisors is an integer number (23557511224).

Almost surely, 2^47115022447 is an apocalyptic number.

47115022447 is a deficient number, since it is larger than the sum of its proper divisors (1).

47115022447 is an equidigital number, since it uses as much as digits as its factorization.

47115022447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 37.

The spelling of 47115022447 in words is "forty-seven billion, one hundred fifteen million, twenty-two thousand, four hundred forty-seven".