421606260773 has 4 divisors (see below), whose sum is σ = 421607718048. Its totient is φ = 421604803500.

The previous prime is 421606260721. The next prime is 421606260827. The reversal of 421606260773 is 377062606124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421606260773 - 2²⁶ = 421539151909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421606260703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131603 + ... + 927648.

It is an arithmetic number, because the mean of its divisors is an integer number (105401929512).

Almost surely, 2^421606260773 is an apocalyptic number.

It is an amenable number.

421606260773 is a deficient number, since it is larger than the sum of its proper divisors (1457275).

421606260773 is a wasteful number, since it uses less digits than its factorization.

421606260773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457274.

The product of its (nonzero) digits is 508032, while the sum is 44.

Adding to 421606260773 its reverse (377062606124), we get a palindrome (798668866897).

The spelling of 421606260773 in words is "four hundred twenty-one billion, six hundred six million, two hundred sixty thousand, seven hundred seventy-three".