473177438221 has 2 divisors, whose sum is σ = 473177438222. Its totient is φ = 473177438220.

The previous prime is 473177438219. The next prime is 473177438287. The reversal of 473177438221 is 122834771374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 265137457225 + 208039980996 = 514915^2 + 456114^2 .

It is a cyclic number.

It is not a de Polignac number, because 473177438221 - 2¹ = 473177438219 is a prime.

Together with 473177438219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (473177438021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236588719110 + 236588719111.

It is an arithmetic number, because the mean of its divisors is an integer number (236588719111).

Almost surely, 2^473177438221 is an apocalyptic number.

It is an amenable number.

473177438221 is a deficient number, since it is larger than the sum of its proper divisors (1).

473177438221 is an equidigital number, since it uses as much as digits as its factorization.

473177438221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1580544, while the sum is 49.

The spelling of 473177438221 in words is "four hundred seventy-three billion, one hundred seventy-seven million, four hundred thirty-eight thousand, two hundred twenty-one".