503505355381 has 8 divisors (see below), whose sum is σ = 576054112320. Its totient is φ = 431111453568.

The previous prime is 503505355337. The next prime is 503505355421. The reversal of 503505355381 is 183553505305.

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

It is a cyclic number.

It is not a de Polignac number, because 503505355381 - 2¹¹ = 503505353333 is a prime.

It is a super-2 number, since 2×503505355381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503505355081) 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, 38706811 + ... + 38719816.

It is an arithmetic number, because the mean of its divisors is an integer number (72006764040).

Almost surely, 2^503505355381 is an apocalyptic number.

It is an amenable number.

503505355381 is a deficient number, since it is larger than the sum of its proper divisors (72548756939).

503505355381 is an equidigital number, since it uses as much as digits as its factorization.

503505355381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77427563.

The product of its (nonzero) digits is 675000, while the sum is 43.

The spelling of 503505355381 in words is "five hundred three billion, five hundred five million, three hundred fifty-five thousand, three hundred eighty-one".