328247042781 has 8 divisors (see below), whose sum is σ = 500185969984. Its totient is φ = 187569738720.

The previous prime is 328247042777. The next prime is 328247042791. The reversal of 328247042781 is 187240742823.

It is a happy number.

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

It is not a de Polignac number, because 328247042781 - 2² = 328247042777 is a prime.

It is a super-2 number, since 2×328247042781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328247042781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328247042791) 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 7 ways as a sum of consecutive naturals, for example, 7815405760 + ... + 7815405801.

It is an arithmetic number, because the mean of its divisors is an integer number (62523246248).

Almost surely, 2^328247042781 is an apocalyptic number.

It is an amenable number.

328247042781 is a deficient number, since it is larger than the sum of its proper divisors (171938927203).

328247042781 is a wasteful number, since it uses less digits than its factorization.

328247042781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15630811571.

The product of its (nonzero) digits is 1204224, while the sum is 48.

The spelling of 328247042781 in words is "three hundred twenty-eight billion, two hundred forty-seven million, forty-two thousand, seven hundred eighty-one".