427229763173 has 2 divisors, whose sum is σ = 427229763174. Its totient is φ = 427229763172.

The previous prime is 427229763127. The next prime is 427229763217. The reversal of 427229763173 is 371367922724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384718746049 + 42511017124 = 620257^2 + 206182^2 .

It is a cyclic number.

It is not a de Polignac number, because 427229763173 - 2⁶ = 427229763109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427229763973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213614881586 + 213614881587.

It is an arithmetic number, because the mean of its divisors is an integer number (213614881587).

Almost surely, 2^427229763173 is an apocalyptic number.

It is an amenable number.

427229763173 is a deficient number, since it is larger than the sum of its proper divisors (1).

427229763173 is an equidigital number, since it uses as much as digits as its factorization.

427229763173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5334336, while the sum is 53.

The spelling of 427229763173 in words is "four hundred twenty-seven billion, two hundred twenty-nine million, seven hundred sixty-three thousand, one hundred seventy-three".