503417661273 has 6 divisors (see below), whose sum is σ = 727158844074. Its totient is φ = 335611774176.

The previous prime is 503417661221. The next prime is 503417661281. The reversal of 503417661273 is 372166714305.

503417661273 is a `hidden beast` number, since 50 + 3 + 417 + 66 + 127 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 499583203344 + 3834457929 = 706812^2 + 61923^2 .

It is not a de Polignac number, because 503417661273 - 2¹² = 503417657177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (503417661973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27967647840 + ... + 27967647857.

It is an arithmetic number, because the mean of its divisors is an integer number (121193140679).

Almost surely, 2^503417661273 is an apocalyptic number.

It is an amenable number.

503417661273 is a deficient number, since it is larger than the sum of its proper divisors (223741182801).

503417661273 is a wasteful number, since it uses less digits than its factorization.

503417661273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55935295703 (or 55935295700 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 503417661273 in words is "five hundred three billion, four hundred seventeen million, six hundred sixty-one thousand, two hundred seventy-three".