47517621773 has 2 divisors, whose sum is σ = 47517621774. Its totient is φ = 47517621772.

The previous prime is 47517621743. The next prime is 47517621793. The reversal of 47517621773 is 37712671574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47494792489 + 22829284 = 217933^2 + 4778^2 .

It is a cyclic number.

It is not a de Polignac number, because 47517621773 - 2⁶ = 47517621709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47517621743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23758810886 + 23758810887.

It is an arithmetic number, because the mean of its divisors is an integer number (23758810887).

Almost surely, 2^47517621773 is an apocalyptic number.

It is an amenable number.

47517621773 is a deficient number, since it is larger than the sum of its proper divisors (1).

47517621773 is an equidigital number, since it uses as much as digits as its factorization.

47517621773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728720, while the sum is 50.

The spelling of 47517621773 in words is "forty-seven billion, five hundred seventeen million, six hundred twenty-one thousand, seven hundred seventy-three".