281228333642 has 8 divisors (see below), whose sum is σ = 440183478816. Its totient is φ = 134500507372.

The previous prime is 281228333641. The next prime is 281228333677. The reversal of 281228333642 is 246333822182.

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

It is a junction number, because it is equal to n+sod(n) for n = 281228333593 and 281228333602.

It is not an unprimeable number, because it can be changed into a prime (281228333641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056829668 + ... + 3056829759.

It is an arithmetic number, because the mean of its divisors is an integer number (55022934852).

Almost surely, 2^281228333642 is an apocalyptic number.

281228333642 is a deficient number, since it is larger than the sum of its proper divisors (158955145174).

281228333642 is a wasteful number, since it uses less digits than its factorization.

281228333642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6113659452.

The product of its digits is 663552, while the sum is 44.

The spelling of 281228333642 in words is "two hundred eighty-one billion, two hundred twenty-eight million, three hundred thirty-three thousand, six hundred forty-two".