993385311764 has 6 divisors (see below), whose sum is σ = 1738424295594. Its totient is φ = 496692655880.

The previous prime is 993385311761. The next prime is 993385311799. The reversal of 993385311764 is 467113583399.

It can be written as a sum of positive squares in only one way, i.e., 731965802500 + 261419509264 = 855550^2 + 511292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993385311761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124173163967 + ... + 124173163974.

It is an arithmetic number, because the mean of its divisors is an integer number (289737382599).

Almost surely, 2^993385311764 is an apocalyptic number.

It is an amenable number.

993385311764 is a deficient number, since it is larger than the sum of its proper divisors (745038983830).

993385311764 is a wasteful number, since it uses less digits than its factorization.

993385311764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248346327945 (or 248346327943 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 59.

The spelling of 993385311764 in words is "nine hundred ninety-three billion, three hundred eighty-five million, three hundred eleven thousand, seven hundred sixty-four".