993383191578648 has 64 divisors (see below), whose sum is σ = 2694015056446560. Its totient is φ = 303425298256896.

The previous prime is 993383191578641. The next prime is 993383191578719. The reversal of 993383191578648 is 846875191383399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993383191578641) 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 in 15 ways as a sum of consecutive naturals, for example, 11620105015 + ... + 11620190502.

Almost surely, 2^{993383191578648} is an apocalyptic number.

It is an amenable number.

993383191578648 is an abundant number, since it is smaller than the sum of its proper divisors (1700631864867912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

993383191578648 is a wasteful number, since it uses less digits than its factorization.

993383191578648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23240295676 (or 23240295672 counting only the distinct ones).

The product of its digits is 8465264640, while the sum is 84.

The spelling of 993383191578648 in words is "nine hundred ninety-three trillion, three hundred eighty-three billion, one hundred ninety-one million, five hundred seventy-eight thousand, six hundred forty-eight".