420194164669 has 16 divisors (see below), whose sum is σ = 449703856000. Its totient is φ = 391428054720.

The previous prime is 420194164657. The next prime is 420194164673. The reversal of 420194164669 is 966461491024.

It is a cyclic number.

It is not a de Polignac number, because 420194164669 - 2¹⁹ = 420193640381 is a prime.

It is a super-2 number, since 2×420194164669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420194164639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3686272 + ... + 3798550.

It is an arithmetic number, because the mean of its divisors is an integer number (28106491000).

Almost surely, 2^420194164669 is an apocalyptic number.

It is an amenable number.

420194164669 is a deficient number, since it is larger than the sum of its proper divisors (29509691331).

420194164669 is a wasteful number, since it uses less digits than its factorization.

420194164669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115588.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 420194164669 in words is "four hundred twenty billion, one hundred ninety-four million, one hundred sixty-four thousand, six hundred sixty-nine".