420681351169 has 16 divisors (see below), whose sum is σ = 426065971968. Its totient is φ = 415340265472.

The previous prime is 420681351143. The next prime is 420681351197. The reversal of 420681351169 is 961153186024.

It is a cyclic number.

It is not a de Polignac number, because 420681351169 - 2²⁹ = 420144480257 is a prime.

It is a super-2 number, since 2×420681351169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420681051169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15136524 + ... + 15164290.

It is an arithmetic number, because the mean of its divisors is an integer number (26629123248).

It is a Proth number, since it is equal to 401193 ⋅ 2²⁰ + 1 and 401193 < 2²⁰.

Almost surely, 2^420681351169 is an apocalyptic number.

It is an amenable number.

420681351169 is a deficient number, since it is larger than the sum of its proper divisors (5384620799).

420681351169 is a wasteful number, since it uses less digits than its factorization.

420681351169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28544.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 420681351169 in words is "four hundred twenty billion, six hundred eighty-one million, three hundred fifty-one thousand, one hundred sixty-nine".