421081757769 has 8 divisors (see below), whose sum is σ = 561456185920. Its totient is φ = 280714250736.

The previous prime is 421081757743. The next prime is 421081757797. The reversal of 421081757769 is 967757180124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421081757769 - 2²⁰ = 421080709193 is a prime.

It is a super-2 number, since 2×421081757769² (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 (421081757729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586614 + ... + 1832895.

It is an arithmetic number, because the mean of its divisors is an integer number (70182023240).

Almost surely, 2^421081757769 is an apocalyptic number.

It is an amenable number.

421081757769 is a deficient number, since it is larger than the sum of its proper divisors (140374428151).

421081757769 is a wasteful number, since it uses less digits than its factorization.

421081757769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460559.

The product of its (nonzero) digits is 5927040, while the sum is 57.

The spelling of 421081757769 in words is "four hundred twenty-one billion, eighty-one million, seven hundred fifty-seven thousand, seven hundred sixty-nine".