47814861613 has 2 divisors, whose sum is σ = 47814861614. Its totient is φ = 47814861612.

The previous prime is 47814861587. The next prime is 47814861643. The reversal of 47814861613 is 31616841874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38338423204 + 9476438409 = 195802^2 + 97347^2 .

It is a cyclic number.

It is not a de Polignac number, because 47814861613 - 2⁵ = 47814861581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47814861643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23907430806 + 23907430807.

It is an arithmetic number, because the mean of its divisors is an integer number (23907430807).

Almost surely, 2^47814861613 is an apocalyptic number.

It is an amenable number.

47814861613 is a deficient number, since it is larger than the sum of its proper divisors (1).

47814861613 is an equidigital number, since it uses as much as digits as its factorization.

47814861613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 49.

The spelling of 47814861613 in words is "forty-seven billion, eight hundred fourteen million, eight hundred sixty-one thousand, six hundred thirteen".