47117666437 has 2 divisors, whose sum is σ = 47117666438. Its totient is φ = 47117666436.

The previous prime is 47117666411. The next prime is 47117666447. The reversal of 47117666437 is 73466671174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46482928801 + 634737636 = 215599^2 + 25194^2 .

It is a cyclic number.

It is not a de Polignac number, because 47117666437 - 2¹⁵ = 47117633669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47117666447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23558833218 + 23558833219.

It is an arithmetic number, because the mean of its divisors is an integer number (23558833219).

Almost surely, 2^47117666437 is an apocalyptic number.

It is an amenable number.

47117666437 is a deficient number, since it is larger than the sum of its proper divisors (1).

47117666437 is an equidigital number, since it uses as much as digits as its factorization.

47117666437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 52.

The spelling of 47117666437 in words is "forty-seven billion, one hundred seventeen million, six hundred sixty-six thousand, four hundred thirty-seven".