28159633378 has 8 divisors (see below), whose sum is σ = 44075947968. Its totient is φ = 13467650724.

The previous prime is 28159633343. The next prime is 28159633387. The reversal of 28159633378 is 87333695182.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306082926 + ... + 306083017.

It is an arithmetic number, because the mean of its divisors is an integer number (5509493496).

Almost surely, 2^28159633378 is an apocalyptic number.

28159633378 is a deficient number, since it is larger than the sum of its proper divisors (15916314590).

28159633378 is a wasteful number, since it uses less digits than its factorization.

28159633378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612165968.

The product of its digits is 6531840, while the sum is 55.

The spelling of 28159633378 in words is "twenty-eight billion, one hundred fifty-nine million, six hundred thirty-three thousand, three hundred seventy-eight".