503542543643 has 2 divisors, whose sum is σ = 503542543644. Its totient is φ = 503542543642.

The previous prime is 503542543579. The next prime is 503542543649. The reversal of 503542543643 is 346345245305.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 503542543643 - 2⁶ = 503542543579 is a prime.

It is a super-2 number, since 2×503542543643² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 503542543594 and 503542543603.

It is not a weakly prime, because it can be changed into another prime (503542543649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251771271821 + 251771271822.

It is an arithmetic number, because the mean of its divisors is an integer number (251771271822).

Almost surely, 2^503542543643 is an apocalyptic number.

503542543643 is a deficient number, since it is larger than the sum of its proper divisors (1).

503542543643 is an equidigital number, since it uses as much as digits as its factorization.

503542543643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 44.

Adding to 503542543643 its reverse (346345245305), we get a palindrome (849887788948).

The spelling of 503542543643 in words is "five hundred three billion, five hundred forty-two million, five hundred forty-three thousand, six hundred forty-three".