993281168878 has 8 divisors (see below), whose sum is σ = 1510906566960. Its totient is φ = 489645646560.

The previous prime is 993281168863. The next prime is 993281168897. The reversal of 993281168878 is 878861182399.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3497468763 + ... + 3497469046.

It is an arithmetic number, because the mean of its divisors is an integer number (188863320870).

Almost surely, 2^993281168878 is an apocalyptic number.

993281168878 is a deficient number, since it is larger than the sum of its proper divisors (517625398082).

993281168878 is a wasteful number, since it uses less digits than its factorization.

993281168878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6994937882.

The product of its digits is 83607552, while the sum is 70.

The spelling of 993281168878 in words is "nine hundred ninety-three billion, two hundred eighty-one million, one hundred sixty-eight thousand, eight hundred seventy-eight".