421315354433 has 4 divisors (see below), whose sum is σ = 421385802708. Its totient is φ = 421244906160.

The previous prime is 421315354391. The next prime is 421315354451. The reversal of 421315354433 is 334453513124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11085352369 + 410230002064 = 105287^2 + 640492^2 .

It is a cyclic number.

It is not a de Polignac number, because 421315354433 - 2²⁶ = 421248245569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421315354133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35215166 + ... + 35227127.

It is an arithmetic number, because the mean of its divisors is an integer number (105346450677).

Almost surely, 2^421315354433 is an apocalyptic number.

It is an amenable number.

421315354433 is a deficient number, since it is larger than the sum of its proper divisors (70448275).

421315354433 is an equidigital number, since it uses as much as digits as its factorization.

421315354433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70448274.

The product of its digits is 259200, while the sum is 38.

Adding to 421315354433 its reverse (334453513124), we get a palindrome (755768867557).

The spelling of 421315354433 in words is "four hundred twenty-one billion, three hundred fifteen million, three hundred fifty-four thousand, four hundred thirty-three".