634245454343 has 4 divisors (see below), whose sum is σ = 634384334640. Its totient is φ = 634106574048.

The previous prime is 634245454333. The next prime is 634245454411. The reversal of 634245454343 is 343454542436.

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

It is a cyclic number.

It is not a de Polignac number, because 634245454343 - 2²⁴ = 634228677127 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 (634245454333) 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, 69433298 + ... + 69442431.

It is an arithmetic number, because the mean of its divisors is an integer number (158596083660).

Almost surely, 2^634245454343 is an apocalyptic number.

634245454343 is a deficient number, since it is larger than the sum of its proper divisors (138880297).

634245454343 is a wasteful number, since it uses less digits than its factorization.

634245454343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138880296.

The product of its digits is 8294400, while the sum is 47.

Adding to 634245454343 its reverse (343454542436), we get a palindrome (977699996779).

The spelling of 634245454343 in words is "six hundred thirty-four billion, two hundred forty-five million, four hundred fifty-four thousand, three hundred forty-three".