328615573851049 has 3 divisors (see below), whose sum is σ = 328615591978807. Its totient is φ = 328615555723292.

The previous prime is 328615573851041. The next prime is 328615573851067. The reversal of 328615573851049 is 940158375516823.

It is a happy number.

The square root of 328615573851049 is 18127757.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 81819894339225 + 246795679511824 = 9045435^2 + 15709732^2 .

It is not a de Polignac number, because 328615573851049 - 2³ = 328615573851041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328615573851041) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9063879 + ... + 27191635.

It is a 2-persistent number, because it is pandigital, and so is 2⋅328615573851049 = 657231147702098, but 3⋅328615573851049 = 985846721553147 is not.

Almost surely, 2^{328615573851049} is an apocalyptic number.

328615573851049 is the 18127757-th square number.

328615573851049 is the 9063879-th centered octagonal number.

It is an amenable number.

328615573851049 is a deficient number, since it is larger than the sum of its proper divisors (18127758).

328615573851049 is an frugal number, since it uses more digits than its factorization.

328615573851049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36255514 (or 18127757 counting only the distinct ones).

The product of its (nonzero) digits is 217728000, while the sum is 67.

The spelling of 328615573851049 in words is "three hundred twenty-eight trillion, six hundred fifteen billion, five hundred seventy-three million, eight hundred fifty-one thousand, forty-nine".