503776128220431 has 16 divisors (see below), whose sum is σ = 732913101994368. Its totient is φ = 305257272012000.

The previous prime is 503776128220399. The next prime is 503776128220433. The reversal of 503776128220431 is 134022821677305.

It is not a de Polignac number, because 503776128220431 - 2⁵ = 503776128220399 is a prime.

It is a super-2 number, since 2×503776128220431² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503776128220433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1539673345 + ... + 1540000506.

It is an arithmetic number, because the mean of its divisors is an integer number (45807068874648).

Almost surely, 2^{503776128220431} is an apocalyptic number.

503776128220431 is a deficient number, since it is larger than the sum of its proper divisors (229136973773937).

503776128220431 is a wasteful number, since it uses less digits than its factorization.

503776128220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079678822.

The product of its (nonzero) digits is 3386880, while the sum is 51.

Adding to 503776128220431 its reverse (134022821677305), we get a palindrome (637798949897736).

The spelling of 503776128220431 in words is "five hundred three trillion, seven hundred seventy-six billion, one hundred twenty-eight million, two hundred twenty thousand, four hundred thirty-one".