423621653211 has 12 divisors (see below), whose sum is σ = 612274054392. Its totient is φ = 282240845856.

The previous prime is 423621653173. The next prime is 423621653237. The reversal of 423621653211 is 112356126324.

423621653211 is a `hidden beast` number, since 4 + 2 + 3 + 621 + 6 + 5 + 3 + 21 + 1 = 666.

It is not a de Polignac number, because 423621653211 - 2¹⁰ = 423621652187 is a prime.

It is a super-2 number, since 2×423621653211² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423621653011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14450346 + ... + 14479631.

It is an arithmetic number, because the mean of its divisors is an integer number (51022837866).

Almost surely, 2^423621653211 is an apocalyptic number.

423621653211 is a deficient number, since it is larger than the sum of its proper divisors (188652401181).

423621653211 is a wasteful number, since it uses less digits than its factorization.

423621653211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28931610 (or 28931607 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

Adding to 423621653211 its reverse (112356126324), we get a palindrome (535977779535).

The spelling of 423621653211 in words is "four hundred twenty-three billion, six hundred twenty-one million, six hundred fifty-three thousand, two hundred eleven".