420315572177 has 2 divisors, whose sum is σ = 420315572178. Its totient is φ = 420315572176.

The previous prime is 420315572137. The next prime is 420315572273. The reversal of 420315572177 is 771275513024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274241789761 + 146073782416 = 523681^2 + 382196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420315572177 is a prime.

It is not a weakly prime, because it can be changed into another prime (420315572137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210157786088 + 210157786089.

It is an arithmetic number, because the mean of its divisors is an integer number (210157786089).

Almost surely, 2^420315572177 is an apocalyptic number.

It is an amenable number.

420315572177 is a deficient number, since it is larger than the sum of its proper divisors (1).

420315572177 is an equidigital number, since it uses as much as digits as its factorization.

420315572177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 420315572177 in words is "four hundred twenty billion, three hundred fifteen million, five hundred seventy-two thousand, one hundred seventy-seven".