47989166417 has 2 divisors, whose sum is σ = 47989166418. Its totient is φ = 47989166416.

The previous prime is 47989166387. The next prime is 47989166471. The reversal of 47989166417 is 71466198974.

Together with next prime (47989166471) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47989036096 + 130321 = 219064^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 47989166417 - 2⁶ = 47989166353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47989166417.

It is not a weakly prime, because it can be changed into another prime (47989166317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23994583208 + 23994583209.

It is an arithmetic number, because the mean of its divisors is an integer number (23994583209).

Almost surely, 2^47989166417 is an apocalyptic number.

It is an amenable number.

47989166417 is a deficient number, since it is larger than the sum of its proper divisors (1).

47989166417 is an equidigital number, since it uses as much as digits as its factorization.

47989166417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152, while the sum is 62.

The spelling of 47989166417 in words is "forty-seven billion, nine hundred eighty-nine million, one hundred sixty-six thousand, four hundred seventeen".