501113353243 has 4 divisors (see below), whose sum is σ = 501126182128. Its totient is φ = 501100524360.

The previous prime is 501113353189. The next prime is 501113353267. The reversal of 501113353243 is 342353311105.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501113353243 is a prime.

It is a super-2 number, since 2×501113353243² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501113353283) 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, 6355671 + ... + 6434032.

It is an arithmetic number, because the mean of its divisors is an integer number (125281545532).

Almost surely, 2^501113353243 is an apocalyptic number.

501113353243 is a deficient number, since it is larger than the sum of its proper divisors (12828885).

501113353243 is a wasteful number, since it uses less digits than its factorization.

501113353243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12828884.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 501113353243 its reverse (342353311105), we get a palindrome (843466664348).

The spelling of 501113353243 in words is "five hundred one billion, one hundred thirteen million, three hundred fifty-three thousand, two hundred forty-three".