422520432613 has 4 divisors (see below), whose sum is σ = 425604523500. Its totient is φ = 419436341728.

The previous prime is 422520432601. The next prime is 422520432623. The reversal of 422520432613 is 316234025224.

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 323280942084 + 99239490529 = 568578^2 + 315023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422520432613 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 (422520432623) 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, 1542045238 + ... + 1542045511.

It is an arithmetic number, because the mean of its divisors is an integer number (106401130875).

Almost surely, 2^422520432613 is an apocalyptic number.

It is an amenable number.

422520432613 is a deficient number, since it is larger than the sum of its proper divisors (3084090887).

422520432613 is a wasteful number, since it uses less digits than its factorization.

422520432613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084090886.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 422520432613 its reverse (316234025224), we get a palindrome (738754457837).

The spelling of 422520432613 in words is "four hundred twenty-two billion, five hundred twenty million, four hundred thirty-two thousand, six hundred thirteen".