420169590473 has 2 divisors, whose sum is σ = 420169590474. Its totient is φ = 420169590472.

The previous prime is 420169590433. The next prime is 420169590479. The reversal of 420169590473 is 374095961024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252338442889 + 167831147584 = 502333^2 + 409672^2 .

It is a cyclic number.

It is not a de Polignac number, because 420169590473 - 2⁶ = 420169590409 is a prime.

It is a super-3 number, since 3×420169590473³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (420169590479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210084795236 + 210084795237.

It is an arithmetic number, because the mean of its divisors is an integer number (210084795237).

Almost surely, 2^420169590473 is an apocalyptic number.

It is an amenable number.

420169590473 is a deficient number, since it is larger than the sum of its proper divisors (1).

420169590473 is an equidigital number, since it uses as much as digits as its factorization.

420169590473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 420169590473 in words is "four hundred twenty billion, one hundred sixty-nine million, five hundred ninety thousand, four hundred seventy-three".