503640116466421 has 8 divisors (see below), whose sum is σ = 564274921643424. Its totient is φ = 445480201296720.

The previous prime is 503640116466391. The next prime is 503640116466427. The reversal of 503640116466421 is 124664611046305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503640116466421 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 (503640116466427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618722501395 + ... + 618722502208.

It is an arithmetic number, because the mean of its divisors is an integer number (70534365205428).

Almost surely, 2^{503640116466421} is an apocalyptic number.

It is an amenable number.

503640116466421 is a deficient number, since it is larger than the sum of its proper divisors (60634805177003).

503640116466421 is a wasteful number, since it uses less digits than its factorization.

503640116466421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237445003651.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 503640116466421 in words is "five hundred three trillion, six hundred forty billion, one hundred sixteen million, four hundred sixty-six thousand, four hundred twenty-one".