993503305399 has 6 divisors (see below), whose sum is σ = 1092032558960. Its totient is φ = 903184822980.

The previous prime is 993503305391. The next prime is 993503305411.

993503305399 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 993503305399 - 2³ = 993503305391 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 (993503305391) 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, 4105385439 + ... + 4105385680.

Almost surely, 2^993503305399 is an apocalyptic number.

993503305399 is a deficient number, since it is larger than the sum of its proper divisors (98529253561).

993503305399 is a wasteful number, since it uses less digits than its factorization.

993503305399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210771141 (or 8210771130 counting only the distinct ones).

The product of its (nonzero) digits is 13286025, while the sum is 58.

The spelling of 993503305399 in words is "nine hundred ninety-three billion, five hundred three million, three hundred five thousand, three hundred ninety-nine".