421332655611 has 16 divisors (see below), whose sum is σ = 642523487744. Its totient is φ = 240576727104.

The previous prime is 421332655607. The next prime is 421332655619. The reversal of 421332655611 is 116556233124.

It is a happy number.

It is not a de Polignac number, because 421332655611 - 2² = 421332655607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421332655611.

It is not an unprimeable number, because it can be changed into a prime (421332655619) 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, 7671586 + ... + 7726311.

It is an arithmetic number, because the mean of its divisors is an integer number (40157717984).

Almost surely, 2^421332655611 is an apocalyptic number.

421332655611 is a deficient number, since it is larger than the sum of its proper divisors (221190832133).

421332655611 is a wasteful number, since it uses less digits than its factorization.

421332655611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15399210.

The product of its digits is 129600, while the sum is 39.

Adding to 421332655611 its reverse (116556233124), we get a palindrome (537888888735).

The spelling of 421332655611 in words is "four hundred twenty-one billion, three hundred thirty-two million, six hundred fifty-five thousand, six hundred eleven".