420143552177 has 2 divisors, whose sum is σ = 420143552178. Its totient is φ = 420143552176.

The previous prime is 420143552173. The next prime is 420143552197. The reversal of 420143552177 is 771255341024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230499850816 + 189643701361 = 480104^2 + 435481^2 .

It is a cyclic number.

It is not a de Polignac number, because 420143552177 - 2² = 420143552173 is a prime.

It is not a weakly prime, because it can be changed into another prime (420143552173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210071776088 + 210071776089.

It is an arithmetic number, because the mean of its divisors is an integer number (210071776089).

Almost surely, 2^420143552177 is an apocalyptic number.

It is an amenable number.

420143552177 is a deficient number, since it is larger than the sum of its proper divisors (1).

420143552177 is an equidigital number, since it uses as much as digits as its factorization.

420143552177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 420143552177 in words is "four hundred twenty billion, one hundred forty-three million, five hundred fifty-two thousand, one hundred seventy-seven".